Mass fixes to headers in README.md files

There were many many README.md files with the wrong heading level for
different sections. These have been changed.

To help go through the changes it should be noted I used sgit and also
here is what is changed:

The 'Try', 'To build' and 'To run' lines have two '#'s. Some had one and
others had three.

An exception is that in 1984/anonymous/README.md for the alternative
code that had three '#'s. This is not consistent yet and it might be
that only two are desired. But for now that one at least has three.

1998/banks/README.md

@@ -12,7 +12,7 @@
 
         make all
 
-### To run
+## To run
 
 	cat horizon.sc pittsburgh.sc | ./banks
 

1998/bas1/README.md

@@ -10,7 +10,7 @@
 
         make all
 
-### To run
+## To run
 
 If lpr on your system can print PostScript:
 

1998/bas2/README.md

@@ -10,7 +10,7 @@
 
         make all
 
-### To run:
+## To run:
 
 	./bas2 < bas2.c
 

1998/df/README.md

@@ -10,7 +10,7 @@
 
         make all
 
-### To run:
+## To run:
 
 	./df
 

1998/dlowe/README.md

@@ -12,7 +12,7 @@
 
         make all
 
-### To run
+## To run
 
 	./dlowe < anyfile > pootfile
 

1998/dloweneil/README.md

@@ -12,7 +12,7 @@
 
         make all
 
-### To run
+## To run
 
 	./pootris
 

1998/schnitzi/README.md

@@ -12,7 +12,7 @@
 
         make all
 
-### To run
+## To run
 
 	./schnitzi 5 > sort.c
 	make sort

1998/schweikh1/README.md

@@ -67,7 +67,7 @@ the different command line and the different numbers.
 To use this version use `schweikh1.alt` instead.
 
 
-### To run:
+## To run:
 
 	./schweikh1
 

1998/tomtorfs/README.md

@@ -12,7 +12,7 @@
 
         make all
 
-### To run
+## To run
 
 	./tomtorfs tomtorfs.c 32 04C11DB7 1 FFFFFFFF FFFFFFFF