Bug 1110837 - [manifestparser] If parents are used, the first include in the master manifest is always used to determine defaults. r=jmaher

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extra : rebase_source : a28ecbd99906a54df76a5b74a45af9feac120488
Bug 1113284 - Bump manifestparser to 0.9. r=ahal

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extra : rebase_source : aaf0d817aab50e25a2f45c2f3c5e386c366ea056