[Testsuite] Fix arm triplets in some testcases.

[James Greenhalgh]

Hi,

Some ARM triplets are of the form armv7l-unknown-linux-gnueabihf.

For these arm-*-* will not match, so fix this with arm*-*-*.

Nor will arm*-*-*eabi, so fix this with arm*-*-*eabi*.

Tested with a run of the affected tests on an
armv7l-unknown-linux-gnueabihf target, showing FAIL->PASS.

OK?

Thanks,
James

---
gcc/testsuite

2013-06-05  James Greenhalgh  <james.greenhalgh@arm.com>

	* gcc.dg/fshort-wchar.c: Add extra dg-options for
	arm*-*-*eabi* targets.
	* gcc.dg/tree-ssa/pr42585.c: Change dg-final to catch
	arm*-*-* targets.
	* gcc.dg/tree-ssa/pr43491.c: Likewise.
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