Enable auto-completion for headers found in a kit's environment

Developing primarily on Windows, I need to manually supply various Unix libraries to the compiler (MSVC) in order to use them.

The Creator's "kits" easily allow me to do so by setting the environment, e.g.:

INCLUDE=D:\Development9\Qwt-6.1.3\include;D:\Development9\Eigen-3.3.2\include\eigen3;D:\Development9\UnixLibsV9-x64\include;${INCLUDE}
LIB=D:\Development9\Qwt-6.1.3\lib;D:\Development9\UnixLibsV9-x64\lib;${LIB}
PATH=D:\Development9\Qwt-6.1.3\bin;D:\Development9\UnixLibsV9-x64\bin;${PATH}

However there seems to be no auto completion within the code editor for all header added via the INCLUDE environment variable.

Please make the code editor scan the directories in the INCLUDE environment so we can have auto completion for these headers!