camlp4 bug was caught by Michael Ethier <methier@cgr.harvard.edu>
- director.swg: fix a typo
- ocamldec.swg, ocaml.swg: new macros
- ac_compare_version.m4: arty's own more liberally licensed version compare
autoconf macro.
- configure.in: use version_compare and make swigp4.ml generated by
configure based on ocaml version. This is due to an incompatible change
in camlp4.
- ocaml.cxx: use new return macros in the right places
(returning non-value)
git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@9518 626c5289-ae23-0410-ae9c-e8d60b6d4f22
