MacOS build support

[EgorOrachyov]

No description provided.

[EgorOrachyov]

Resource with specification for POSIX aligned memory allocation.
Suppose, that it is good substitution for C11 aligned_alloc

http://man7.org/linux/man-pages/man3/posix_memalign.3.html

[EgorOrachyov]

Also, there are several problems with C-style var-num-of-args functions, which are strongly prohibited by clang on macOS.

https://stackoverflow.com/questions/14432539/c-passing-classes-to-vararg-function

[EgorOrachyov]

Some errors were generated because of POD usage in template classes.
Have to force use flag -Wno-error=non-pod-varargs

https://stackoverflow.com/questions/17009282/c-non-pod-warning-for-passing-a-string

[EgorOrachyov]

Some troubles with finding third-party libraries, installed on macOS and located under usr root. Have to use hardcoded path for tbb. Lib avcodec was not automatically disabled by qmake (avcodec was not installed on my machine).

[EgorOrachyov]

Built applications and libs.