* environ.cc (win_env::add_cache): Set the Windows environment variable
	using wide chars to make sure native chars don't get scrambled.
	* environ.h (build_env): Fix formatting in declaration.
	* pinfo.cc (pinfo::status_exit): Handle STATUS_NO_MEMORY.  Explain why.
	* pinfo.cc (pinfo::status_exit): Enhance comment.
	* Makefile.in (DEFS): Unused, remove.
	(COMPILE.cc): Move -mno-use-libstdc-wrappers flag from here...
	($(TEST_DLL_NAME)): ...to here since it's a link time flag.