libstdc++-v3/ChangeLog:

	* testsuite/27_io/filesystem/path/construct/102592.C: Moved to...
	* testsuite/27_io/filesystem/path/construct/102592.cc: ...here.
	* testsuite/28_regex/match_results/102667.C: Moved to...
	* testsuite/28_regex/match_results/102667.cc: ...here.

Tested powerpc64le-linux. Committed to trunk.

I've added a local git pre-commit hook to stop me adding more files
with .C extensions.