To the best of my knowledge, the only file which we don't have 2-BSD
relicensing permission for at this stage is rdf2ihx.c. That file
probably should just be rewritten, if anyone cares.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Concentrate compiler dependencies to compiler.h; make sure compiler.h
is included first in every .c file (since some prototypes may depend
on the presence of feature request macros.)
Actually use the conditional inclusion of various functions (totally
broken in previous releases.)
