* testsuite/lib/libstdc++.exp: Load target-supports-dg.exp.
	* testsuite/26_numerics/complex/13450.cc: XFAIL for broken_cplxf_arg.
	* testsuite/26_numerics/complex/complex_value.cc: Ditto.
	* testsuite/26_numerics/complex/pow.cc: Ditto.

From-SVN: r94902