Add support for sets

Add support for sets, countings unique events
https://github.com/etsy/statsd/pull/152
Uncommented STREAMing macro
Supress 'unknown error: 127'

If there is no data to stream, streaming command exit with status [127]
Fix for streaming sets

Do not send all set's values, just size of set (number of unique
elements)
More info about StatsD sets:
https://github.com/etsy/statsd/pull/152
Fixed sets

Changed set's value type
Merged histogram changes
Update .gitignore for mac osx
Recovery master branch
Merged Armon's master
Deleted bin. files
Customization - replace kv by gauges
Merge pull request #5 from armon/master

Merge fixes
Added debug macros
Added strerror for streaming command
Revert "Revert "Revert "Revert "Added librato sink""""

This reverts commit 9c866d5ac770956d045db35f7f1e2ae837440bfa.
Revert "Revert "Revert "Revert "Revert "Added librato sink"""""

This reverts commit 4e30a05c7ab0da64e4a4d4c939fa5273c577fa24.
Merge pull request #6 from armon/master

Merge fixes
Merge branch 'master' of https://github.com/armon/statsite into armon-master
Merge master branches (sync. with armon-master)
Merge branch 'master' of https://github.com/kuba--/statsite