Various fixes and updates

Make lines beginning (in markdown files) 'BTW' bold. Rebuilt the
respective html pages.

Slight update to abstract in two entries (1985/shapiro and
1994/shapiro). One is changing 'defines' to '#defines' and the other was
a typo fix.

Fixed make gen_next: added missing new files.

Various fixes in next/register.html (typos and other things).

1994/shapiro/.entry.json

@@ -6,7 +6,7 @@
     "dir" : "shapiro",
     "entry_id" : "1994_shapiro",
     "title" : "1994.shapiro",
-    "abstract" : "print time of day on an tty",
+    "abstract" : "print time of day on a tty",
     "author_set" : [
         {
             "author_handle" : "Andrew_Shapiro"

1994/shapiro/index.html

@@ -406,7 +406,7 @@
   </a>
   <h1>The International Obfuscated C Code Contest</h1>
   <h2>1994/shapiro - Most well rounded obfuscation</h2>
-  <h3>print time of day on an tty</h3>
+  <h3>print time of day on a tty</h3>
 </div>
 
 <!-- END: this line ends content from: inc/header.default.html -->