lib/Makefile has the correct order and .WAIT stop points.
There is no point in duplicate the correct order here too.
I should have commited this change, when I fixed the order in lib/Makefile
is heavily based upon the work rtr@ did on src/x11, but hacked to
work for modern modular Xorg source split.
the sources will live in xsrc/external/mit/<package>/dist.
documentation on using this will come when the above directories
are fully populated. there are 192 of them so it may take some time
before that is completed.