Use canonical suffixes for OCaml programs

Closes #16
Allow us of the optimized compiler toolchain

Closes #18.
Configure available compression tools and prefer xz over bzip2
Add flag for the short functor notation in ocamldoc

The flag ODOC_SHORT_FUNCTORS governs the use of the short functor
notation in ocamldoc.  Its implicit value is yes.

Closes #30.
Merge branches 'topic/14-phase-out-tarbz2', 'topic/16-standard-suffixes-for-program-files', 'topic/18-using-optimised-compilers-toolchain' and 'topic/30-short-functor-notation' into current
Add new logo

The original image comes from Vectorportal.com which allows its use for
personal and commercial projects or the creation of derivative work.
Update file headers

This major spamming operation updates:
- the name of the project
- the copyright notice
- the project URL
Update INSTALL and INDEX
Remove obsolete website publication procedure

This procedure is useless since the project moved to BitBucket, which
provides a wiki.

See also 8a5c317.
Merge branch 'releng/v2.2'
BSD Owl Scripts v2.2