acinclude.m4 (GLIBCPP_CHECK_GNU_MAKE): Bourne shell portability bug (use ${MAKE-make}, not ${MAKE:-make}).

	* acinclude.m4 (GLIBCPP_CHECK_GNU_MAKE): Bourne shell portability bug
	(use ${MAKE-make}, not ${MAKE:-make}).
	* aclocal.m4, configure: Regenerate.

From-SVN: r39277