JavaCameraView delivers same frame twice (Bug #3123) fixed.
allow QtKit capture in secondary threads

[NSRunLoop currentRunLoop] is not the same as in the main thread.
see
https://developer.apple.com/library/mac/#documentation/Cocoa/Reference/F
oundation/Classes/nsrunloop_Class/Reference/Reference.html
"If no input sources or timers are attached to the run loop, this
method exits immediately"

The old code caused grabFrame() to return immediately if the capture
was not done in the main thread.
This code works correctly, even in secondary threads, provided that all
capture functions are called in the *same* thread
fixed warnings in gpu modules from VS 2012
GFTT wrapped to python
optimize stereoBP kernel
Fix oclMat constructor when roi is provided.
Merge pull request #1086 from melody-rain:2.4_fix_oclMat_constructor
Merge pull request #1085 from bitwangyaoyao:2.4_optBP
line realign
xls-report.py: don't eat all errors when reading sheet.conf
Bug #3124 libopencv_java.so v 2.4.6 hangs on some Android 4.0.3 devices fixed.

Downgrade TBB to 4.1u2 for all platforms, except WinRT.
Merge pull request #1090 from asmorkalov:android_tbb_downgrade
xls-report.py: added an option to include data from unrecognized XMLs
xls-report.py: made most columns a little wider
xls-report.py: write tests in sorted order
xls-report.py: make behaviour more intelligent in case of repeated results
Merge pull request #1091 from SpecLad:xls-updates
OpenCV Manager version++.
Merge pull request #1087 from znah:2.4
Merge pull request #1092 from asmorkalov:manager_version_inc