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).
to follow the naming convention for this type of functions.
Split 16 and 32-bit relay functions into separate files, and moved the
32-bit ones to dlls/ntdll.