Add partly UT code for deblocking filter
Modify the targets.mk
Add CLIP3 and using ASSERT_FALSE macros
Modify the random value range which only for debug
Modify the CLIP3 macros to match the CLIP3(value, min, max)
Add partly UT cases into it which related to function call
Modify the typo for WELS_NEON
Add partly UT cases into it which related to Bs calculation
Update Windows VS project
Merge pull request #1402 from HaiboZhu/Add_UT_Deblocking

Add ut deblocking
Fix compiler warnings about comparison between signed and unsigned
Merge pull request #1406 from mstorsjo/fix-warnings

Fix compiler warnings about comparison between signed and unsigned
Merge remote-tracking branch 'upstream/master' into travis.osx