* MinGWResourceCompiler: change output directory and name of compiled resource file (old resource object files have to be deleted manually, eg. cvpcb/cvpcb_rc.o since the 'make clean' target does not remove them).
* Add some comments.
* Set a NAME_RESOURCES variable in MinGWResourceCompiler.
* Fix looking for zlib under msys (C:\msys\1.0). Minizip now builds under windows with external zlib.
This allows you to install only specific components (i.e. binaries, resources, doc files in specific languages), particularly useful for package mainatiners.
Default install will work as before (i.e. install everything).