Upgrade cairo to 1.12.16
Upgrade pixman to 0.30.2
Remove -march=i686 flag

It used to be needed for a build hack, but it no longer is.
Automatically remove unused tarballs.
Disable sse2 in pixman (Bug 707653)
Never build webkitgtk with debugging symbols.

I've seen the dll take insane amounts of space (3.3 GB) with debug
symbols on some compilers, and I doubt the symbols will be needed.
Upgrade glib2 to 2.36.4
Upgrade libpng to 1.6.6
Upgrade glib2 to 2.38.0
Upgrade gtk2 to 2.24.22
Upgrade atk to 2.10.0
Fix string comparison in split-build for non-bash shells.
Start building libgexiv2 and exiv2
Upgrade harfbuzz to 0.9.23
Upgrade pango to 1.36.0
Upgrade glib2 to 2.38.1
Upgrade poppler to 0.24.3
Add poppler-data
Upgrade libmng to 2.0.2
Upgrade freetype2 to 2.5.0.1