* macros/mm-python.m4: Look in i386-linux-gnu too, as that seems
  to be used in Ubuntu Trusty Tahr.

* glom/frame_glom.cc: This was another ! error from the commits to
  avoid clang warnings.

These are mostly checks after getting widgets from glade files.

* examples/example_small_business.glom: Somehow only the
  German translation was there.

* glom/utils_ui.[h|cc]:
  Add a treeview_delete_all_columns() method to explicitly
  delete the columns instead of just removing them and sometimes
  implicitly deleting them with Gtk::TreeView::remove_all_columns().
* glom/mode_data/db_adddel/db_adddel.[h|cc]:
* glom/utility_widgets/adddel/adddel.cc:
* glom/import_csv/dialog_import_csv.cc: Use it.

This seems to fix a crash when switching between Data and Find mode,
though that might just have been due to not resetting the pointer
to the button column.

I still do not like not being able to correct the commit messages
and I still do not like how it leads us to be lazy when writing
the ChangeLog entries, but git still makes it hard to manage
branches when using a manually-written ChangeLog.

* glom/main.c: Instantiate the Application earlier, to ensure
  that GTK+ is ready for use.
  Also call gtk_init() explicitly because Gtk::Application needs
  a fix for this anyway, and it would be nice to use this fix
  in Glom versions that do not need a newer gtkmm.

  Bug #680411 (Bjørn Lie, Dominique Leuenberger)

In case the UI is crashing at first use somehow, as it currently seems to
be on Fedora.

	* 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.

        * tests/test_document_load_translations.cc: Increase the number
	of expected translation locales and adapt to us having a
	(mostly useless) en_GB translation.

        * macros/macros/mm-python.m4: Also check in
        /usr/lib/i386-linux-gnu/ because that is where Ubuntu Raring
        (and maybe Debian) put libpython2.7 there.y

	* glom/dialog_existing_or_new.cc: Catch exceptions from
	xmlpp::SaxParser::parse_chunk() because libxml nows
	returns an error code from xmlParserChunk when we call
	xmlStopParser(), which libxml++ then throws as an
	exception. Maybe libxml++ should not do that for that
	new error code.
	This is the libxml commit:
	https://git.gnome.org/browse/libxml2/commit/?id=e50ba8164eee06461c73cd8abb9b46aa0be81869

	* ui/operator/dialog_existing_or_new.glade: Set the
	parent GtkHBox to expand, because there is some change
	of behaviour with the latest GTK+ from git master.
	Before this expanded already.

* configure.ac:
        * Makefile_tests.am:
* tests/tests_glom_date_in_locales.sh.in:
Generate tests/tests_glom_date_in_locales.sh from
tests/tests_glom_date_in_locales.sh.in, so it can
include the path to the locally-built glom
executable.

        * Makefile_tests.am: Set the PYTHONPATH in
automake's TESTS_ENVIRONMENT variable
to fix make check before make install has run,
and generally to be a correct check.