Most of these tests should not really be installed by default, so they are disabled here for OPAM builds. (We can leverage the opam test facility if we add a build-test field to the opam file, but I didn't bother here.) Building via Makefile still builds tests though.
Also, with 39938fb, OCaml 4.03.0 is required, so update opam accordingly.
Misc fixes to opam.
Most of these tests should not really be installed by default, so they are disabled here for OPAM builds. (We can leverage the opam test facility if we add a
build-test
field to the opam file, but I didn't bother here.) Building via Makefile still builds tests though.Also, with 39938fb, OCaml 4.03.0 is required, so update opam accordingly.