* configure, configure.in: Add pmac_xcoff_vec case.
* Makefile.in (BFD32_BACKENDS): Add coff-pmac.o.
* coff-pmac.c: New file, PowerMac XCOFF support.
* coffcode.h (coff_set_arch_mach_hook): Add PowerMac case.
* targets.c (pmac_xcoff_vec): Declare.
* mpw-config.in: Various changes to be compatible with the
autoconf-based configury.
* mpw-make.sed: New file, sed commands to translate Unix
makefile into MPW syntax.
* mpw-make.in: Remove.
* hosts/mpw.h: Remove.
* bfd-in.h, bfd-in2.h: If MPW, include the file that defines
true and false as enums, then define TRUE_FALSE_ALREADY_DEFINED.
