prepare for new release
update the readme with build requirements
more fixes for osx
some fixes for the binary builds
Applied Michiel's sf patch 2823885 to remove the /usr/X11R6 dirs from darwin
added lena to mpl_data
update the makefile for win32 build
added miktex win32 patch from sf patch 2820194
revert setupext.py patch for osx; breaks my osx test build
apply sf patches 2830233 and 2823885 for osx setup and 64 bit; thanks Michiel
