MultiprocessingCore: timing out GetConfig() calls can cause memory issues
MultiprocessingCore: dispatch "bcfg2-admin perf" calls to children
Core: update VCS revision only when events are handled
Packages: reduce source_from_xml() calls on startup
Yum: Fixed class-scope variable assignments
MultiprocessingCore: added missing docstring
Yum: suppress warning about class variable assignment
POSIXUsers: Handle unicode gecos attributes

Signed-off-by: Sol Jerome <sol.jerome@gmail.com>