Issue #202 fix inconsistency
Merge pull request #205 from mozilla-services/issue_202

Issue #202 fix inconsistency
Issue #207 fix realloc size
Merge pull request #208 from mozilla-services/issue_207

Issue #207 fix realloc size
Issue #214 Less agressive sandbox termination

- Sample at least a full channel's worth of messages before being able to
terminate a sandbox.  This slows down detection but greatly reduces false
positives.  This applies to the matcher and filter channels.

- Prevent a backpressured condition from causing severe oversampling of message
processing times.

- Remove the sampling after a timer event, it can be used to game the system by
returning quickly from the next process_message call.

- Rename MatcherAvgDuration to MatchAvgDuration to be consistent with the other
report attribute names.

- Add additional data to the blocked termination message so the exact cause is
clear.
Make the duration sample rate a constant
Merge pull request #217 from mozilla-services/issue_214

Issue #214 Less aggressive sandbox termination
Use the stopChan we already have instead of a struct boolean value to appease Go's
race detector.
Merge branch 'dev' into features/issue-212
Merge pull request #218 from mozilla-services/features/issue-212

Use the stopChan to send StatsdInput internal stop message
changed LogFiles to just be a single file 'LogFile' for LogfileInput
updated configuration for Logfile parameter in LogfileInput and
readded the missing hostname documentation
accidentally removed the amqp docs with the last changeset.
Merge pull request #220 from mozilla-services/features/singlefile_lfi

changed LogFiles to just be a single file 'LogFile' for LogfileInput
Merge branch 'dev' into features/issue_140

Conflicts:
	docs/source/configuration.rst
	pipeline/inputs_test.go
	pipeline/logfile_input.go