Compile OpenCV with GCC visibility set to hidden
Merge pull request #873 from prclibo:2.4
Merge pull request #879 from apavlenko:gcc-4.8
Merge pull request #880 from apavlenko:qt-5.0
Merge pull request #840 from pablospe:master
Merge pull request #881 from apavlenko:hidden_visibility
Merge pull request #850 from SpecLad:convhull-orientation
Merge pull request #819 from bitwangyaoyao:2.4_haarBuf
Merge pull request #874 from pengx17:master_queryDeviceInfo_rewrite
Merge pull request #871 from bitwangyaoyao:2.4_acry
Merge pull request #872 from pengx17:2.4_create2dimage_fix
Merge pull request #849 from dominikrose:dom_2.4
Merge pull request #878 from apavlenko:better_glue_search
Copy ocl::queryDeviceInfo interface from master to 2.4.
Affected functions surf.ocl, pyrlk.ocl and hog.ocl are updated with the change.
fix black screen when input Mat is large
Merge pull request #883 from bitwangyaoyao:2.4_fixMoments
Merge pull request #839 from pengx17:2.4_ocl_csbp
Merge pull request #823 from pickle27:starter_image_sequence
Merge pull request #818 from bitwangyaoyao:2.4_optBlur
Merge pull request #862 from piponazo:v4lFPS