Bug 1087207 - Use a smaller initial size for the srcnotes vector. r=jorendorff.

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extra : rebase_source : 49c9ad1698e473ebdea601c5764949a08c1636d1
Bug 588522 - Remove JSOP_ENDINIT. r=jorendorff.

--HG--
extra : rebase_source : b29027ca554bf590747efc621f458ac7daee32b1