cmake: restore find_package() for build directory
cmake: add opencv_java into list of exported targets (fix for android)
cmake: fix linker deps for CUDA
ocl: rewrite CvtColor tests, added roi support
Merge pull request #1634 from alalek:cmake_fix_cuda_linker_deps
Merge pull request #1635 from alalek:cmake_fix_export_java
Merge pull request #1632 from alalek:cmake_find_package_build_dir
Merge pull request #1613 from alalek:ocl_cvtcolor