Blender Git Loki

Bug fix #28915 and #33538

Mac OS X trackpad and 'mighty mouse' fix.

An old commit from Damien in 2010 tried to make mighty mouse touches work as if
this is a scrollwheel. The error in that code was that the "kinetic scrolling"
feature failed. When releasing your fingers, the events passed on to Blender
then switched from "trackpad pan" to "mousewheel zoom".

This commit makes trackpads and mighty mouse behave identical. Only difference
is that trackpad panning needs 2 fingers, mighty mouse only one.

Note that trackpad and mighty mouse 3d zoom works with holding ctrl!

All works nice with this kinetic feature now. Fun :)