put all README.md files under CC BY-SA 4.0 License

This will make is easier for others to share README.md
files while requiring them to attribute the file
when using it.

2004/anonymous/README.md

@@ -87,3 +87,12 @@ strings.
 The code contains a vector font which was derived by toying with Harri
 Pera:la:'s Tengwar Cursive font. Currently, only the glyphs used in the
 Ring inscription are included in the font.
+
+## Copyright and CC BY-SA 4.0 License:
+
+This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.
+You are free to share and adapt this file under the terms this license:
+
+    Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+
+For more information, see: https://creativecommons.org/licenses/by-sa/4.0/

2004/arachnid/README.md

@@ -67,3 +67,12 @@ Usage:
 ```
 
 You can explore the maze using the w,a,s, and d keys.
+
+## Copyright and CC BY-SA 4.0 License:
+
+This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.
+You are free to share and adapt this file under the terms this license:
+
+    Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+
+For more information, see: https://creativecommons.org/licenses/by-sa/4.0/

2004/burley/README.md

@@ -79,3 +79,12 @@ is written as a single statement -- count the semicolons!  (OK, there
 are really three statements if you count the variable declarations.)  To
 keep things simple, I have avoided the C preprocessor and tricky
 statements such as "if", "for", "do", "while", "switch", and "goto".
+
+## Copyright and CC BY-SA 4.0 License:
+
+This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.
+You are free to share and adapt this file under the terms this license:
+
+    Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+
+For more information, see: https://creativecommons.org/licenses/by-sa/4.0/

2004/gavare/README.md

@@ -72,3 +72,12 @@ paper.  Since I care for the global environment, we shouldn't waste any
 more laser toner, or ink, than necessary. Everyone should write C code
 with no  reserved words, and our world will be a better place.
 </humor>
+
+## Copyright and CC BY-SA 4.0 License:
+
+This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.
+You are free to share and adapt this file under the terms this license:
+
+    Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+
+For more information, see: https://creativecommons.org/licenses/by-sa/4.0/

2004/gavin/README.md

@@ -161,3 +161,12 @@ so these may need updating as appropriate (0x90200 is the address
 at which a Linux bootloader loads an x86 kernel image).
 
 * ;-)
+
+## Copyright and CC BY-SA 4.0 License:
+
+This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.
+You are free to share and adapt this file under the terms this license:
+
+    Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+
+For more information, see: https://creativecommons.org/licenses/by-sa/4.0/

2004/hibachi/README.md

@@ -177,3 +177,12 @@ kill %1
     Most Likely to Cook Apache
     Best Interpretation of RFC 2616
     Winner of The Far Too Much Free Time Award
+
+## Copyright and CC BY-SA 4.0 License:
+
+This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.
+You are free to share and adapt this file under the terms this license:
+
+    Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+
+For more information, see: https://creativecommons.org/licenses/by-sa/4.0/

2004/hoyle/README.md

@@ -75,3 +75,12 @@ Note that:
 ```
 
 will produce the same graph, since the y-axis is auto scaling.
+
+## Copyright and CC BY-SA 4.0 License:
+
+This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.
+You are free to share and adapt this file under the terms this license:
+
+    Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+
+For more information, see: https://creativecommons.org/licenses/by-sa/4.0/

2004/jdalbec/README.md

@@ -170,3 +170,12 @@ By using ternary operators to avoid "else"
 By using the Sb function to create subbuffers from either end
 By naming everything after chemical elements or pairs of elements
 Because it says so in the source. ;)
+
+## Copyright and CC BY-SA 4.0 License:
+
+This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.
+You are free to share and adapt this file under the terms this license:
+
+    Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+
+For more information, see: https://creativecommons.org/licenses/by-sa/4.0/

2004/kopczynski/README.md

@@ -187,3 +187,12 @@ the number from 8 to 11 that it thinks it is.
 9. Finally, the program tries to be as concise as possible. Some
    obfuscation comes from this. For additional obfuscation and
    conciseness, 'if' means 'while'.
+
+## Copyright and CC BY-SA 4.0 License:
+
+This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.
+You are free to share and adapt this file under the terms this license:
+
+    Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+
+For more information, see: https://creativecommons.org/licenses/by-sa/4.0/

2004/newbern/README.md

@@ -65,3 +65,12 @@ Decryption is left as an exercise for the reader.
 The program assumes an ASCII operating environment.
 
 The program is best viewed with tab-stops set to 8.
+
+## Copyright and CC BY-SA 4.0 License:
+
+This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.
+You are free to share and adapt this file under the terms this license:
+
+    Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+
+For more information, see: https://creativecommons.org/licenses/by-sa/4.0/

2004/omoikane/README.md

@@ -165,3 +165,12 @@ still fail...
 
 (text above is also included as an info file, so that the checksum
 would match)
+
+## Copyright and CC BY-SA 4.0 License:
+
+This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.
+You are free to share and adapt this file under the terms this license:
+
+    Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+
+For more information, see: https://creativecommons.org/licenses/by-sa/4.0/

2004/schnitzi/README.md

@@ -151,3 +151,12 @@ is a right-click menu option on the top window bar.
 
 I would like to remind the Pixar Animation Studios that I retain
 royalties on this technique.
+
+## Copyright and CC BY-SA 4.0 License:
+
+This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.
+You are free to share and adapt this file under the terms this license:
+
+    Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+
+For more information, see: https://creativecommons.org/licenses/by-sa/4.0/

2004/sds/README.md

@@ -109,3 +109,12 @@ Compiling the program
 The program (and the encoder program) should compile on any
 reasonable compiler.  In particular, they are known to compile under
 GNU C.
+
+## Copyright and CC BY-SA 4.0 License:
+
+This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.
+You are free to share and adapt this file under the terms this license:
+
+    Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+
+For more information, see: https://creativecommons.org/licenses/by-sa/4.0/

2004/vik1/README.md

@@ -136,3 +136,11 @@ that the byte order of the colors  are as on my Linux PC.  That is,  The
 colors are represented  by a 32 bit value where the bytes  (from high to
 low) are { 0, RED, GREEN, BLUE }.
 
+## Copyright and CC BY-SA 4.0 License:
+
+This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.
+You are free to share and adapt this file under the terms this license:
+
+    Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+
+For more information, see: https://creativecommons.org/licenses/by-sa/4.0/

2004/vik2/README.md

@@ -208,3 +208,12 @@ and a lot of disk.
      _10     < 1024    6 826 389     114     63 782 912(*)  2h 47'58"(*)
 
 	 (*) Before cpp crashed.
+
+## Copyright and CC BY-SA 4.0 License:
+
+This file is Copyright (c) 2023 by Landon Curt Noll.  All Rights Reserved.
+You are free to share and adapt this file under the terms this license:
+
+    Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+
+For more information, see: https://creativecommons.org/licenses/by-sa/4.0/