app-admin/rsyslog-7.4.9 added.

Changelog:
==========
 * added ProcessInternalMessages global system parameter
   This permits to inject rsyslog status messages into *another* main
   syslogd or the journal.

 * bugfix: imuxsock input parameters were not accepted due to copy&paste
   error. Thanks to Andy Goldstein for the fix.

 * bugfix: potential double-free in RainerScript equal comparison happens
   if the left-hand operand is JSON object and the right-hand operand is
   a non-string that does not convert to a number (for example, it can be
   another JSON object, probably the only case that could happen in
   practice). This is very unlikely to be triggered.

 * bugfix: some RainerScript Json(Variable)/string comparisons were wrong

The ProcessInternalMessages global system parameter introduced a new
dependency on dev-libs/liblogging (which is also part of this commit),
read Rainer's explanation about this decision in the mailing list [1].

I also bumped dev-libs/liblognorm to v0.3.7 and added a masked version
of dev-libs/liblognorm-1.0.0 (masked to avoid warning from applications
which requires <liblognorm-1.0.0).

See also:
=========
[1] http://thread.gmane.org/gmane.comp.sysutils.rsyslog/12710/focus=12721