Without this, AMC cannot export the results to OpenOffice. When one
presses "Reports->OpenOffice->Export", a dialog appears saying that
OpenOffice::OODoc perl module is not installed.
We switch to using makeFullPerlPath to make dependencies of
OpenOfficeOODoc also available. Without this, export complains about
missing XMLTwig.
Without this change, LaTeX run during "Update documents" (AMC-prepare)
phase complains about not finding automultiplechoice.sty. TEXINPUTS
should match TEXDIR value specified in makeFlags.
