Card origin_node_39 - Introduce GearStatePlugin

* Attempt to have Watchman enforce applications' status matching state
* Add logger to WatchmanPlugin, allowing plugins to log to platform logs
* Add timeouts to all spawn calls
* Update API's to support event compression on restart, stop and idle
* Update man page
* Update tests
Bug 1068891 - Remove redundant call to date
fix php upgrade version
Fix Bug 1070059 - Incorrect git command info listed in perl default home page
added \ before $
Card origin_node_39 - Fix unit test
Merge pull request #4830 from jwhonce/bug/1068891

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Merge pull request #4831 from VojtechVitek/php_upgrade_fix

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Merge pull request #4832 from sg00dwin/incorrect-git-command-perl-start-page

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Merge pull request #4829 from jwhonce/origin_node_39

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Merge pull request #4833 from danmcp/master

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