Haunted Hedgehog Release Candidate

• Breaking change: To better handle multiple releases from same root and output dir relx now outputs to <output_dir>/<rel_name>/
• Fix #178 remote_console when -sname <name> doesn't include the hostname
• Fix #130 resolve root directory to absolute path
• Fix merging of config file settings and command line arguments so arguments have precedence
• Option addded to extended start script to replace env vars in config files by setting os var $RELX_REPLACE_OS_VARS
• Fix for dev_mode symlink traversal in discover provider
• Broke relup and tar out in to their own providers
• Fully integrated with concrete https://github.com/opscode/concrete