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]

solo.R

@@ -16,3 +16,7 @@ GAMES += solo
 !begin >list.c
     A(solo) \
 !end
+
+!begin >wingames.lst
+solo.exe
+!end