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
		
	
			
		
			
				
	
	
		
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			ArmAsm
		
	
	
	
	
	
			
		
		
	
	
			6 lines
		
	
	
	
		
			91 B
		
	
	
	
		
			ArmAsm
		
	
	
	
	
	
| .sect .text
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| .define __exit
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| __exit:
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| 	addi r0, r0, 1		! _exit
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| 	lwz r3, 0(sp)		! status
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| 	sc 0
 |