Only define the "copy back" rules if Bison/Flex have been used to generate the files in the 'out' directory.
Only define the "copy back" rules if Bison/Flex have been used to generate
the files in the 'out' directory.


git-svn-id: 28d9401aa571d5108e51b194aae6f24ca5964c06@16381 8cc4aa7f-3514-0410-904f-f2cc9021211c

crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS