Clang seems to be confused by too many templates and function
overloading, so we sacrifice little bit of convenience to make it happy.

Conflicts:
	src/lib/server_common/Makefile.am

use a tab before the keyword type.

use two tabs before the committer username.

As briefly mentioned in jabber.

So the messages are shorter and the prefix itself doesn't contain an
underscore.

I could have fixed the cross-reference spelling, but instead
I just replaced it with real explanation of the format.

This is very minor and mentioned on jabber.

Only log details of the zone being added after input validation,
when it is known the the zone pointer is non-null.  (Validation
detects null pointers and throws an exception.)

i.e. allow control-chars in strings

since this is just a short description, i'm pushing this straight to master

mainly to add an explanation for handle_logging_config