Telling osx386 and osxppc to build and run their own tools, not to
reuse the tools from linux386 and linuxppc. This wastes time to build
identical tools, but it removes some bogus dependencies. OS X tools
had wrongly depended on Linux descr files and aelflod; now they don't.
Discussion in https://github.com/davidgiven/ack/pull/23
These produce Mach-o executables for Mac OS X on Intel or PowerPC
processors. Our code generator for PowerPC (mach/powerpc) still has
bugs. Some examples seem to run, but startrek crashes. Our code
generator for Intel (mach/i386) is better.
There is a problem with job control. If you run paranoia or startrek,
then suspend the job (^Z) and resume it ('fg' in bash), then read(2)
might fail with EINTR.
The larger files in this commit are
- plat/osx/cvmach/cvmach.c
- plat/osx/libsys/brk.c
- plat/osx386/libsys/sigaction.s
- plat/osxppc/libsys/sigaction.s
