Add ReportPosition to report logstream filename/byte position
Add ReportMsg for reporting from logstreamer plugin
Only numerically format dasher values with a known representation
Lock logstreamSet where necessary in logstreamer_input
Update CHANGES.txt with LogstreamInput reporting
Update CHANGES.txt - document LogstreamerInput gzip support
Merge pull request #851 from mattcottingham/patch-1

Document LogstreamerInput gzip support
Add a HyperLogLog library to the Lua sandbox.

Uses the Redis implementation see: http://antirez.com/news/75.
Merge pull request #854 from mozilla-services/hyperloglog

Add a HyperLogLog library to the Lua sandbox.
Document protobuf stream framing.
Merge branch 'features/logstreamer-reports' of github.com:mattcottingham/heka into mattcottingham-features/logstreamer-reports

Conflicts:
	CHANGES.txt
Merge branch 'mattcottingham-features/logstreamer-reports' into dev
Merge pull request #856 from mozilla-services/document-stream-framing

Document protobuf stream framing.
Merge branch 'dev' into unixgram-support

Conflicts:
	CHANGES.txt