filechooser: Document the settings XML
Updated Hungarian properties translation
fix prototypes of signal callbacks in the test suite

The signal callbacks are defined to take pointers as their arguments, but the
callbacks found in testsuite/gtk/builder.c are passing a GParamSpec by value
as the second argument.  This confuses and angers the compiler on ppc64el,
resulting in segfaults after return from the function due to stack-smashing
by the (completely-unused) argument.

https://bugzilla.gnome.org/show_bug.cgi?id=721700
Updated German translation
Updated German translation