* gcc.dg/20060410.c: Xfail on ptx.
	* gcc.dg/torture/c99-contract-1.c: Skip on ptx.
	* c-c++-common/torture/complex-sign-mixed-add.c: Skip on ptx -O0
	* c-c++-common/torture/complex-sign-mixed-sub.c: Skip on ptx -O0
	* gcc.c-torture/execute/pr68185.c: Skip on ptx -O0 & Os.
	* gcc.c-torture/execute/20020529-1.c: Skip on ptx -00.

From-SVN: r236774