Add net-misc/anydesk and x11-libs/gtkglext

x11-libs/gtkglext:

• Remove pangox-compat dependency by modifying single function that still depends on it (HACK!)

net-misc/anydesk:

• Remove dependency on pangox-compat in ebuild
• Patch installed binary to remove shared library reference to "libpangox-1.0.so.0" (HACK!)