Introduces a new option --debug-to-files which makes SSSD output its
debug information to a file instead of stderr, which is still the
default.

Also introduces a new confdb option debug_to_files which does the same,
but can be specified per-service in the config file.

The logfiles are stored in /var/log/sssd by default.

Changes the initscript to log to files by default.

This converts a great many configuration options to the new
standard format.

The backends do not honor the reloadConfig SBUS message right now,
so if an admin changes the sssd.conf file, it will update only the
monitor, potentially leaving the SSSD as a whole in a bad state.

This patch will simply comment out monitor_config_file() for the
time being until https://fedorahosted.org/sssd/ticket/91 is fixed.

When a laptop is suspended it may be dormant for hours.
Do not check just the kast time a ping was successful, keep a counter with the
failed pings instead.

This reverts commit 8c50bd085c0efe5fde354deee2c8118887aae29d.

Amended: commit 1016af2b1b97ad4290ccce8fa462cc7e3c191b2e also made
use of the SYSLOG_ERROR() macro, so those portions of that code
also needed to be reverted.

This is just a band-aid until ELAPI is fully functional and ready to
use.

We were talloc_free()-ing the cdb_file string too early.

We will now parse the config file and validate the confdb contents
before processing the rest of the monitor startup. This will allow
us to return an appropriate error code to the shell if the
configuration is invalid.

Because the confdb always operates synchronously, it maintains its
own private event context internally. The event context argument
passed to it is never used, so we'll remove it to avoid confusion.