Add ocaml library Camomile into wip/ocaml-camomile.

Camomile is a comprehensive Unicode library for ocaml.  Camomile
provides Unicode character type, UTF-8, UTF-16, UTF-32 strings,
conversion to/from about 200 encodings, collation and locale-sensitive
case mappings, and more.
Add ocaml-camomile.
* Use QORE_LATEST_MODULE_API in PLIST
* Remove unneeded buildlink3.mk references as these are now in qore/buildlink3.mk
* Bump PKGREVISION beacuse of PLIST change.