[patch, objc++, testsuite] PR35165, a few extra tidies.

[IainS]

As I said in my PR35165 Part 2 email, there are some opportunities to  
improve a little more for ObjC++.
In addition to a couple of minor bug-fixes (posted separately), the  
following mop up testsuite-only changes.

tested on powerpc-apple-darwin9, i686-apple-darwin9 and ia32-pc-linux.
The improvements are best on powerpc (which handles -mdynamic-no-pic,  
and therefore we clear all the stubify fails).

testsuite/Changelog:

2010-0327  Iain Sandoe <iain.sandoe@sandoe-acoustics.co.uk>

	PR testsuite/35165
	* obj-c++.dg/try-catch-9.mm: Don't XFAIL m32 NeXT runtime.
	* obj-c++.dg/try-catch-2.mm: Ditto.
	* obj-c++.dg/lookup-2.mm: Ditto.
	* obj-c++.dg/encode-8.m: Ditto.
	* obj-c++.dg/cxx-ivars-2.mm: Ditto.
	* obj-c++.dg/cxx-ivars-3.mm: Skip for GNU, XFail for m64 NeXT.
	* obj-c++.dg/const-str-10.mm: Skip for GNU, match .quad for m64 NeXT.
	* obj-c++.dg/const-str-11.mm: Ditto.
	* obj-c++.dg/const-str-9.mm: Ditto.
	* obj-c++.dg/bitfield-3.mm: Skip for GNU runtime.
	* obj-c++.dg/bitfield-2.mm: XFAIL run for m64 NeXT runtime.
	* obj-c++.dg/except-1.mm: Ditto.
	* obj-c++.dg/const-str-7.mm: Ditto.
	* obj-c++.dg/cxx-ivars-1.mm: Ditto.
	* obj-c++.dg/const-str-3.mm: Ditto.
	* obj-c++.dg/const-str-7.mm: Ditto.
	* obj-c++.dg/stubify-2.mm: Change dump file name.

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