fixed the size of output velocity map in OptFlowBM, ticket #1362 (thanks to Takanori Y for the patch)

Input/Output arrays are updated to support fixed-type and fixed-size semantic for all compatible types

Improved Android SDK search, fixed some bugs.

Made small change which fixes the situation, when ORB does not find any descriptors on an image. Earlier ORB::operator() crashed in this case, since rowRange method was called for an empty matrix.

changed epsilon for matrix comparison in gpu::sqrt test

moving inpaintTest() to 'photo';
hiding 'Point*' arg in Java signature of Core.checkRange().