At the same time, change the library sonames for -3.0 to just -3.
This is necessary since the 2.99 releases installed libraries like
libgtk-3.0.so.0.9903.0, and we want to prevent the library version
number from jumping back. So 3.0 will have libgtk-3.so.0.0.0.
After this commit, pc files no longer include the gdk backend in
their name, and we no longer install a pc file for gdk. There is
now a single gtk+-3.0.pc file. It turns out a separate gtk+-x11-3.0.pc
file is not necessary, since gdkx.h doesn't have a separate include
directory that would have to be added to Cflags.
We do this by adding -DGSEAL_ENABLE to the Cflags in the .pc files,
so you can get out of it by adding -UGSEAL_ENABLE after the pkg-config
generated flags.
In particular, rename
- libraries to lib*-3.0.so
- pc files to *-3.0.pc
- include paths to /usr/include/gtk-3.0/*
- module paths to /usr/lib/gtk-3.0/*
- rc files names to gtk-3.0/gtkrc
- commandline utilities to *-3.0
- adjust documentation
Also change the install location for unix-print headers to
/usr/include/gtk-3.0/unix-print/gtk.
