moved MSVC defines from winprefix.h to osdcomm.h
removed empty file compilation - porttime.c
removed osinline.h in windows and sdl and change files using them.
make TARGET=mess -j19
will generate all needed files and build MESS, while developing you can use
make TARGET=mess COMPILE=1 -j19
to prevent rebuilding of make files.
Build system have automatic generate of dependencies so will do incremental builds fine.
make clean
will remove all generated files/projects and obj files
