changed output from fps to time (in msec). Notes for dx10 and dx11: the first measure is wrong (zero), the followiing are correct; measured time includes output text to surface.

pos should never exceed strlen, else the overflow check 'if (!len)' will wrongfully pass

1. Remove uncessary index calculation.
2. Use mad/mad24 as possible.
Signed-off-by: Yan Wang <yan.wang@linux.intel.com>

by this new function we can set libjpeg "scale_denom" parameter and load jpeg images scaled 1/2 - 1/4 - 1/8
other image formats resized after loading

compute fps changed (now only interop counts). fixed d3d10 and d3d11 print info method (there were issues with texture mapping)

Fixed polarity of ImageRegistration mode in setDepthGeneratorProperty function of CvCapture_OpenNI2 class

simplified sample's interface (remove odd "no processing" branch, add print to screen for processing mode)

http://code.opencv.org/issues/4462

Adding &31 to bit shift in order to silince coverity BAD_SHIFT defect

add default_stripes_count const

Fix SVM::trainAuto (Bug #4464)

Scripts are updated for Linux-based (Ubuntu 14.04) mingw cross-compilation (full stack of scripts provided)
Part of these scripts may work under Windows installation of MinGW, but it is not supported.

FFMPEG update: 2.7.1
Added OpenH264 Cisco binaries support for H264 encoding: v1.4.0