Bug 994707 - Provide the crash events path as an environment variable for the crashreporter. r=ted

--HG--
extra : rebase_source : 1ca29ca44c3fbf18504afe0ce1a6c1d1d87a49a2
Bug 994707 - Introduce crash submission events and handle them. r=bsmedberg
This introduces a new crash event type for submissions and handles
them in the Crash Manager. These crash submissions will also be counted
in FHR.

--HG--
extra : rebase_source : 41fb43f9588885033e49dccfaf9351ef805c476b
Bug 994707 - Write crash submission events. r=ted

--HG--
extra : rebase_source : 47ead0e8b561019ce382aa2a848fca4baf92f2fe