* doc/guide.tex: Mention as optional Requirements: mysql, pgsql
and pam
* src/ejabberd_admin.erl: Command reopen-log must also rotate
sasl.log (thanks to Alexander Tsvyashchenko)(EJAB-711)
* src/ejabberd_logger_h.erl: Export the function rotate_log/1
* doc/guide.tex: Improve explanation of log files rotation
* doc/guide.tex: Improve explanation of watchdog admins
option: only useful for developers (EJAB-816)
* src/ejabberd.cfg.example: Likewise
* doc/guide.tex: Say 'higher' instead of 'newer' in requirements
* README: Likewise
* doc/guide.tex: Simplify example mod_muc configuration
SVN Revision: 1732
