Remove pre_invalid parameter
Join kernel code for int and float destination types
fixed usage of reshape
Small refactoring
Fix pointer conversion
Merge pull request #2854 from ilya-lavrenov:tapi_filter2d
Merge pull request #2871 from vbystricky:oclopt_integral
ENH: Add more patterns to .gitignore

Update the .gitignore to ignore common
files that may accidently show up in the
source tree.