Update to matplotlib 1.3.0

Needed to edit the inreplace line because they changed setupext.py a bit. I didn't test the various optional dependencies very exhaustively but I don't think anything has changed there.
matplotlib: LaTeX is optional now

Some may prefer not to have latex.
matplotlib: pygobject is needed if --with-pygtk

But still it seems matplotlib cannot find gtk.h. We have to twek here a
bit more.
matplotlib: tk was renamed to tcl-tk in homebrew/dupes

#Fixes #30
matplotlib: Needs pyparsing and dateutils

Now brew corretly tests and enforces that to avoid on-the-fly download
and install.