pkg/debian: Fix versioning if upstream is dev/rc

  * Ensure a clean upgrade path on debian:
   * Change the upstream version from 'x.x.x.dev' and 'x.x.x.rcx' to 'x.x.x~dev' and 'x.x.x~rcx'
   * Use UTC instead of local time in the debian version
adding codec support to rabbitmq input / output, and a compressed-spooler codec to spool, compress and forward events
Alter dependency for Java on Debian

  * We don't want to pull in java6 when java7 is already installed
Merge pull request #662 from pieterlexis/debian_upstream_dev_version

pkg/debian: Fix versioning if upstream is dev/rc
Merge pull request #709 from pieterlexis/debian_dependencies

Alter dependency for Java on Debian
Merge pull request #750 from avleen/compress_spooler

adding codec support to rabbitmq input / output, and a compressed-spoole...
- style fixes for #750
Merge pull request #761 from logstash/pr750-style-fixes

- style fixes for #750
Merge git://github.com/logstash/logstash