* Makefile.am (MOSTLYCLEANFILES): Remove testing files and logs.
	(mostlyclean-local): Remove check-runtime-dir, cgo-test-dir,
	carchive-test-dir.
	(ECHO_ENV): Define.
	(check-go-tool): Depend on cgo.  Write command to testlog.
	(check-runtime): New target.
	(check-cgo-test): New target.
	(check-carchive-test): New target.
	(check): Depend on check-runtime, check-cgo-test,
	check-carchive-test.  Add @ to prettify output.
	(.PHONY): Add check-runtime, check-cgo-test, check-carchive-test.
	* Makefile.in: Rebuild.

From-SVN: r249799