include/freetype/internal/internal.h: fixed header inclusion macros
	to use direct definitions. This is the only way to do these things
	in a portable way :-( The rest of the code should follow shortly
	though everything compiles now..

	* builds/compiler/intelc.mk, builds/compiler/watcom.mk,
	builds/win32/detect.mk: added support for the Intel C/C++ compiler,
	as well as _preliminary_ (read: doesn't work !!) support for Watcom.
	Also added a new setup target. Type "make setup list" for a list
	of supported command-line compilers on Win32..