Add support for Riemann TCP transport
Merge branch 'master' into feature/gmetad-riemann-tcp-squashed
Merge remote-tracking branch 'upstream/master' into feature/gmetad-riemann-tcp-squashed

Conflicts:
	gmetad/Makefile.am
	gmetad/export_helpers.c
increment riemann counters by no. metrics in message
Fall back to searching for protobuff the hard way

It seems Debian fails to ship the pkgconfig file.  Sad.
fix merge conflicts
change some errors to debug output
dont include gm_scoreboard.h as gmetad SOURCE
Merge pull request #134 from satterly/feature/gmetad-riemann-tcp-squashed

Add Riemann TCP transport support