Old ebuild renamed works, but...
--disable-demos works again and should be added to this ebuild, after all it's
in all other gtkmm ebuilds.
--enable-api-atkmm configure option was added so it's now possible to disable
building atkmm.
And a minor upstream bug: in demos/gtk-demo/Makefile.am there are two
contradicting lines: a comment and a command. It's:
#Build the executable, but don't install it.
bin_PROGRAMS = demo
I think the second one should be:
noinstall_PROGRAMS = demo
as it is in parent directory for pixbuf-demo.
