added improved biadapt scaler for pure mode (--scale=biadv); enabled nearest-neighboor scaler to use updated-region
git-svn-id: svn://svn.code.sf.net/p/sc2/code/trunk@622 8092fc87-c524-0410-9efc-e669fe64eaf9
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git-svn-id: svn://svn.code.sf.net/p/sc2/code/trunk@622 8092fc87-c524-0410-9efc-e669fe64eaf9