tests: hsm copytool name changed to lhsmtool_posix
rbh-config: set persistant changelog mask.

Set changelog mask using conf_param instead of set_param,
so it is not reset after MDS restart.
listmgr: same operation order on tables for each listmgr call.

This is a try to deal with some Deadlock errors in MySQL.
Performing operation on tables always with the same order should
fix it.
rbh-find: changed 'ctime' option to 'crtime' for creation time
to avoid confusion with POSIX ctime (=metadata change time).
help: updated command help.
web_gui: using a LGPL font.
config parsing, rbh-report: Fixed memleaks.
changelog reader: dump the previous changelog entries on error.

Add a debug function to dump the nth previous changelog entries that
are to be processed by the pipeline. Suppressed changelogs cannot be
displayed, since they are already gone.
rbh-find: Update LIFO implementation used by rbh-find.

Under certain circumstances, the array used could grow many times,
leading to a buffer overrun and heap corruption.
packaging: remove last dependancy on mysql.

Oracle's package is called MySQL, and we can't easily look for it,
because the system could be rpm/deb/... based. And rbh-config already
tests for the presence of the right binaries.
doc: preparing robinhood 2.5.0 release.

Changelog update. Documentation update.
Sources of documentation added to the repository.