JACK in preview window
Pass JACK-offset from canvas into preview window, when preview created
Update fps for keyframe widget when canvas properties changed
Default initialization for ColorAccumulators instead memset
Remove unfinished code for surfacenew.h/.cpp
Remove broken target MPG from mod_ppm
Fix warnings unitialized fields, functions without return
Fix bug with bline tool and zoom
Fix bug #638 CRASH: Shift-Click on Tangent handle
Fix bug #624 - Can't edit widthpoint position using mouse
Fix Linux build script
Fix JACK conditional statements for Preview Window
Remove mention of deleted files
MinGW build: Ignore symlinks
New crosscompile script for creating linux packages is working now

Benefits of new approach:
* No root prevelegies required
* Allows to build from current working tree
* No need to create full package to test modifications
* Allows to build with custom library set, without affecting system libraries
* Easy to debug the application because dependent libraries can also provide debug symbols
Allow Windows Users to use MyPaint brushes
Add Lossless H.264 encoding profile. The resulting file is compatible with Sony Vegas and other software based on QuickTime AVC decoders.
Allow target to handle alpha in 4 different ways
Allow to render alpha information into separate file (GUI).

This is useful for rendering into formats that doesn't support alpha channel (avi, jpeg, etc).
In this case user can selec "Extract Alpha" option in rendering dialog and alpha information will be rendered into separate file.
Allow to render alpha information into separate file (CLI).

The new option "--extract-alpha" (or "-x") allows to extract alpha information into separate file ("-alpha" suffix added into output filename).