Merge branch 'master' into 'master'

CMake: Enable Boost_USE_STATIC_LIBS

Just a simple test to see how merge request work.

For distribution purposes it is often easier to link against the static libraries of boost. Enabling Boost_USE_STATIC_LIBS in CMake previously did not have any effect. If the flag is not explicitly set boost will be linked dynamically as before.

See merge request !1