Get CMake to choose right vectorization flags.
Able to pass vectorization flags to compiler.

Next step is to check for INTRINSICS_BROKEN that depend on the compiler/architecture combination and to remove flags that would break compilation.
Search for broken intrinsics seems to work.
Build custom Boost if version 1.55.0 was not found on system.

TODO:
1. pass C++11 compiler flag to Boost build toolset;
2. pass list of libraries to build as proper CMake list and then transform to bjam format.
Refactor the way to pass list of needed components
Everything builds fine, even with -jN
Some refactoring of the custom Boost build process.
Merge branch 'master' into release
Adjust .travil.yml