man page: fix language in debug level description Reviewed-by: Justin Stephenson <jstephen@redhat.com>

MAN: Clarify debug_level a bit Some users are confused about placement of the debug_level directive or the location of the log files. Clarify both in the man page. Also add a pointer to sss_debuglevel. Reviewed-by: Pavel Březina <pbrezina@redhat.com>

MAN: Reflow debug_levels.xml Many lines in debug_levels.xml violated our line-length conventsions. This patch provides no functional changes, it simply brings those lines into compliance.

MAN: Clarify debug level documentation Originally, we planned to deprecate the decimal values for the debug levels, but that has proven to be too difficult for most users to understand. Instead, we will document both the simple decimal and complex bitmask values and recommend the use of the decimal values.

New DEBUG facility - man pages https://fedorahosted.org/sssd/ticket/925 Modified sssd and sssd.conf man pages to reflect new levels. Added new man include: include/debug_levels.xml