Hi,

Various gdb tests report the absolute path to a source file in an 
UNSUPPORTED outcome.  This creates noise when comparing result output 
with previous test runs.  This patch drops the directory prefix from the 
reported path in a couple of the offending unsupported calls.

OK?

Cheers
/Marcus

2014-03-31  Marcus Shawcroft  <marcus.shawcroft@arm.com>

	* lib/gdb.exp (gdb_compile_pthreads, gdb_compile_objc):
	Drop prefix from unsupported source file path.