Includes a mkc configuration file and processes it.
include <filepath>;
include <directory> <filepath>; # not yet implemented
For the first form, the include statement first checks if filepath is a direct match, then for filepath in the mkc units directory, then for filepath in the user's mkc units directory.
The second form changes the working directory to directory, then includes filepath.
include commonpaths.mkc;
include auto commonpaths.mkc;
include baseconfig.mkc;
include 'cflags.mkc';