Fix issue #123 : Prevent constant rebuilds - only unnecessary build is now graphstudio.cpp for version resource
MIDL settings output name for dlldata.c changed to unique name to prevent unnecessary MIDL recompilation
Version header generated by SubWCRev removed from stdafx.h
precompiled header generated from new stdafx.cpp not graphstudio.cpp
fixed some build warnings


git-svn-id: http://graph-studio-next.googlecode.com/svn/trunk@178 c2f33eb2-41b2-391d-4cb4-d9d0608729ba