Updated Spanish translation
Updated Czech translation
Updated POTFILES.in
configure.ac: Avoid deprecated libsigc++ API.
Updated Brazilian Portuguese translation
Updated Hungarian translation
Add an appdata.xml file.

* glom.appdata.xml.in: Add the file.
* configure.ac: Create glom.appdata.xml from the .in file.
  This lets us translate it.
* po/POTFILES.in: Mention the file so its contents can
  be translated.
* Makefile.am: Install the file next to the .desktop file.

This is needed by the new GNOME Software Center.
Updated Hungarian translation
Add generated appdata file to POTFILES.skip
Updated Spanish translation
Updated Czech translation
Updated Czech translation
Updated Brazilian Portuguese translation proofread by Rafael Ferreira
Fixed Czech translation
Avoid a crash at shutdown.

	* glom/bakery/appwindow_withdoc.cc: on_menu_file_close():
	Close the document after hiding the UI, instead of the other way
	around because, with Gio::Application, hiding the window can cause
	it to be deleted, making any further use of it impossible.
Use the regular AX_BOOST_PYTHON configure.ac macro.

	* macros/ax_boost_python_murrayc.m4: Remove this heavily changed
	version of AX_BOOST_PYTHON because it is hard to use this while getting
	improvements to the official one.
	* macros/mm-python.m4: Remove this, which we used in
	AX_BOOST_PYTHON_MURRAYC.
	* macros/: Add the latest versions of ax_python_devel.m4,
	ax_boost_base.m4 and ax_boost_python.m4.
	* configure.ac: Use the official macros.
	* Makefile_libglom.am: Create some variables to build the
	flags and concatenate them together for simple use, and use them.
	* Makefile_tests.am: Use the variables here too.

Hopefully this does not cause any regressions. It should make it
easier to use python 3.
AX_BOOST_PYTHON: Prefer the library from --with-boost-python
Add a hint about building with Python 3
configure.ac: Revert request for Python >=3
Updated Slovenian translation