Created a new module to support vid.stab library.
Update module to work with the latest vid.stab version 0.98.

* Added a new property "zoomspeed" for adaptive zooming feature.
* Removed a no longer used "sharpen" property.
Mark vid.stab module as GPL
Added a fourth filter, that combines both detect and transform passes.

* Increased a default smoothing factor, according to the original
vid.stab default settings.
* Added a deshake data clear when seeking is performed.
* Added a version check in configure script.
Merge filter_detect and filter_transform into filter_vidstab