This should be safe todo unless we are writing a signal handler.

The video(4) driver provides a Video4Linux2 compatible API for
various video peripherals. This patch propagates HAVE_VIDEOIO if
the sys/videoio.h include file is found, which is the signature of
video(4).

- added CMake toolchain file
- added WITH_NVCUVID flag

Sometimes information about dependencies causing disabling were loosed and it
was not possible to correctly display these dependencies in status report

ReadMe.txt for OpenCV Manager added;
share folder excluded from SDK.

Libinfo revision formating fix;
HW dependent VersionCode for Manager implemented.

Some repo normalization problems fixed;
Deprecated cmake keys removed;
Warning fixed.

Based on pull request #31 (thanks to Eric Christiansen)
Support for Java is turned off by default and can be enabled setting
BUILD_opencv_java to ON (e.g. cmake -DBUILD_opencv_java=ON ..)

added GPU non local means brute force filter + tests

To speed up rebuilds, define the NDK_CCACHE environment or CMake variable
to the path to your ccache binary. When declared, the android.cmake.toolchain
automatically uses CCache when compiling any C/C++ source file. For example:

export NDK_CCACHE=ccache

fixed MCVC warnings

* No /arch:SSE3 in MSVC
* Warnings fixed or suppressed

enabled SSE3 by default; integrated SSE3-optimized bilateral filter (by Grigoriy Frolov); modified API of non-local means (use Input/OutputArrays)