[committed] clean up testcases for darwin targets

[Eric Christopher <echristo at apple dot com>]

So, darwin for better or worse defaults to PIC. There are a bunch of  
testcases failing for x86 that are normally skipped if -fPIC is  
passed on the command line. We should just skip those for darwin  
targets as well. There's also one that is only valid in the non-pic  
case, but if we skip the clobbering of ebx we should be ok.

tested on x86-darwin with no regressions. brings us down to 19  
failures in C land that appear to mostly be valid. (visibility-11 and  
pragma-pack-3 are iffy).

I think that this qualifies as pretty obvious so I'm just committing.

-eric

2006-06-02  Eric Christopher  <echristo@apple.com>

	* gcc.c-torture/compile/20000804-1.c: Skip if darwin.
	* gcc.target/i386/20020523-1.c: Ditto.
	* gcc.target/i386/asm-3.c: Ditto.
	* gcc.target/i386/20011119-1.c: Ditto.
	* gcc.target/i386/clobbers.c: Remove pic part of test.

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