Turn gnome-pty-helper into a stand-alone port. Copy parts of the vte3
Makefile and the patches from the current vte3 port.
The next update of the vte3 port to 0.42.x doesn't bundle this code anymore.
Obtained from: gnome devel repo
(Only the first 10 of 20 ports in this commit are shown above. )
Add vte3, the Gtk 3 version of the vte terminal widget.
Split off gnome-pty-helper from vte to allow both versions of vte to be
installed at the same time.
Update comment to make it clearer which gtk+ version it is for.
Enable introspection bindings in vte.
Obtained from: GNOME dev repo.