Libraries build by gitg expose a number of includes in their public
headers belonging to different libraries. Therefore, these libraries
are indirect dependencies of the library to be built.
With this in mind, these indirect dependencies are also included
when a direct dependency is included, so there is no need to include
them again.
Dependency hierarchy has been fixed and duplicated dependencies
removed.
Created `pkg-config` files requirements have also been fixed.
meson is a build system focused on speed an ease of use, which
helps speeding up the software development. This patch adds meson
support along autotools.
https://bugzilla.gnome.org/show_bug.cgi?id=788796
This makes the dash view a bit more similar to gnome builder.
It is still not complete on features but it gives already
a good way to continue improving it.
