re PR bootstrap/77661 (--enable-maintainer-mode causes in-tree-build of MPC to fail)

2017-04-19  Thomas Koenig  <tkoenig@gcc.gnu.org>
	Tobias Burnus  <tobias.burnus@physik.fu-berlin.de>

	PR bootstrap/77661
	* Makefile.def: Don't pass --enable-maintainer-mode on to an
	in-tree build MPC.
	* Makefile.in: Regenerate.


Co-Authored-By: Tobias Burnus <tobias.burnus@physik.fu-berlin.de>

From-SVN: r247006