debug channels definitions.
Made win32 the default type for spec files.
Ignore C compiler in winebuild so we can simply pass it $(DEFS).
Removed type win32 and debug_channels from spec files.
Fixed winebuild to always generate correct C identifiers (reported by
Vincent Béron).
files/dirs for easier maintenance. Cleaned up structs and include
files. Reindented the code. Started the same for Direct3D. Driver
inclusion now done by using configure/Makefile/ELF constructor tricks.