By trying to lead the way of clean includes, I sorted the lines
alphabetically and that is a problem for mingw builds with gnulib.
As 'configmake.h' defines DATADIR and 'datatypes.h' transitively
includes 'winsock.h' that uses 'DATADIR' as a name for a struct,
it's enough to reorder those.

Even though this might be worked around in gnulib later on, this
fixes the build for now.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>