Fix shutdown sequence to wait force_flush#1009

Merged

tagomoris merged 3 commits intomasterfrom fix-shutdown-sequence-to-wait-flush-all

May 31, 2016

+13-5

Commits on May 30, 2016

emit events only when thread still running
tagomoris
committed
executing before_shutdown of output plugins should be waited by main_loop: it does force_flush
tagomoris
committed
Add callback per kind for shutdown sequence of plugins
tagomoris
committed