* Makefile.tpl: Use 'mkinstalldirs' rather than 'mkdir' when

	creating target and build subdirs to build all parent dirs as needed.
	* Makefile.in: Rebuild.
	* configure.in: Don't build dirs explicitly here.
	* configure: Rebuild.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@69871 138bc75d-0d04-0410-961f-82ee72b054a4