dev-libs/liblogging: Bumped to v1.0.2

Changelogs:
===========
 - first version of the "real" API of liblogging-stdlog
   It is now feature-complete with multiple channels, signal-safeness, and
   logging drivers for syslog, the systemd journal, unix sockets and files.

   Note: if the journal driver is to be build (enabled by default), a new
   dependency libsystemd-journal exists. This is the required to use the
   journal API. You can turn off building the journal driver via the
   --disable-journal configure option