Minor updates:
*Made branches' po update multi-process!
*0.8 looks a bit too much a "similarity cutoff" value for messages, changed to 0.75.

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@53777 954f8c5b-7b00-dc11-b283-0030488c597c