Remove /* foo.c */ comments

This was done by the following
        find . -name '*.[ch]' | /tmp/pl
where /tmp/pl is the following three-line script:
        print unless $. == 1 && m@/\* .*\.[ch] \*/@;
        close ARGV if eof; # Close file to reset $.

And then some hand-editing of other files.

Reviewed-by: Viktor Dukhovni <viktor@openssl.org>

demos/bio/saccept.c

@@ -1,6 +1,3 @@
-/* NOCW */
-/* demos/bio/saccept.c */
-
 /*-
  * A minimal program to serve an SSL connection.
  * It uses blocking.