Rework AJXP_Logger
- expose all log levels
- accept a variable number of argument

Signed-off-by: Etienne CHAMPETIER <etienne.champetier@fiducial.net>
Rework auth.ldap logging

Signed-off-by: Etienne CHAMPETIER <etienne.champetier@fiducial.net>
Correct all 'AJXP_Logger::logAction("error"'

Signed-off-by: Etienne CHAMPETIER <etienne.champetier@fiducial.net>