Upgrade libpng to 1.6.6
Temporarily build OpenCV from the TOT sources of the 2.4.x branch because the currently stable 2.4.6 does not build with current clang, and 2.4.7 is not out yet.
Add some extra checks for gfortran and change the URL for where to get gfortran in the error message.
Add log message in dylib rewrite script, add safety check to handle missing/blank input values.
Use existing virtualenv if it's present.
Dump logfile when one of the long-running Python module installs fails.
Comment improvement
Update to IPython 1.1.0
Add scikit-learn module
Don't use a "script output file" entry for the embed OpenCV build phase to make sure the copy always happens.
Bump deployment target to 10.9.
Bump version to 1.5
Set minimum system version to 10.9 in the appcast XML snippet generated by the distribution script.
Add script phase to force-code-sign all embedded frameworks/dylibs/XPC services.
Replace '--pylab inline' with '--matplotlib inline'