Add __builtin_choose_expr and __builtin_types_compatible_p, as reported
missing by Steve Kargl on pcc-list.
new date 20140927
Mask out fpu exceptions, the compiler may want to load NAN etc...
If inline functions found that are never called, output their destination
labels anyway to make pass2 happy.
Fixes FreeBSD math bug reported on pcc-list by Steve Kargl.
new date 20140929
Special-case return type of float complex, it is returned in eax/edx instead.
Must have permanent memory for computed goto in case of inlining.
Do not ignore 't' xasm constraint, it must be put in a (virtual) register
anyway.   Bug reported by Steve Kargl on pcc-list.
new date 20140930
Fix a few argument order errors.
Fix bug in big endian handling of bitfields.
new date 20141002
Add missing whitespace, from Alan Cox.
long long should be 64 bits.  From Alan Cox.
Compile under minix, from Alan Cox.
Repair cast float->uint.
long is the same as int, not as long long.
new date 20141003
Use bsr if generating PIC code, jsr otherwise.
Generate PIC GOT reg reference.