re PR libstdc++/51368 (libstdc++ python pretty printers should use --with-python-dir just like libjava)

2012-02-15  Benjamin Kosnik  <bkoz@redhat.com>

	PR libstdc++/51368
	* acinclude.m4 (GLIBCXX_ENABLE_PYTHON): New.
	* configure.ac: Use it.
	* python/Makefile.am: Same.
	* configure: Regenerate.
	* python/Makefile.in: Regenerate.
	* Makefile.in: Same.
	* doc/Makefile.in: Same.
	* include/Makefile.in: Same.
	* po/Makefile.in: Same.
	* src/Makefile.in: Same.
	* src/c++11/Makefile.in: Same.
	* src/c++98/Makefile.in: Same.
	* testsuite/Makefile.in: Same.

Co-Authored-By: Jonathan Wakely <jwakely.gcc@gmail.com>

From-SVN: r184282