Build script for Puzzles using bob. I've also added a piece of extra

infrastructure to the mkfiles.pl framework for the convenience of
the build script: it generates `wingames.lst', a list of the Windows
binaries which are ship-worthy games as opposed to nullgame or
command-line auxiliary programs.

[originally from svn r7206]

makedist.sh

@@ -15,7 +15,7 @@ case "$#" in
     if test "x$rev" = "xexported"; then rev=; fi
     ;;
   *)
-    case "$1" in *[!0-9]*) echo "Malformed revision number '$1'">&2;exit 1;;esac
+    case "$1" in *[!0-9M]*) echo "Malformed revision number '$1'">&2;exit 1;;esac
     rev="$1"
     ;;
 esac