Deprecate log config in component config stanzas

Signed-off-by: Frank Filz <ffilz@us.ibm.com>
Change from log dest per component to global log dest

Which allows us to have multiple log destinations with a maximum log
level for each (so errors can go to syslog while debug goes to a file).

Also add reload of LOG config on SIGHUP.

Signed-off-by: Frank Filz <ffilz@us.ibm.com>