Fix initialization of gcrypt to avoid crashes if other libraries fail to do it so

https://bugzilla.gnome.org/show_bug.cgi?id=732475
Stop using my own moduleset for gtk-osx
Build pango with --with-included-modules for OS X
Added GIO modules to frogr.bundle and point it from the launcher
Temporarily remove gstreamer again
Build GTK without introspection
Build librsvg without introspection
Build libxml2 before libcroco
Updated README file