Bug 900346 (part 1) - Fix peekTokenSameLine().  r=jwalden.

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extra : rebase_source : c1c76d2ceb6b23d0cdc061c740bffdc8b4244a38
Bug 900346 (part 2) - Fix some comments in TokenStream.h.  r=jwalden.

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extra : rebase_source : 374e1a258f9dd1aba86b90318016b5275fa9a092
No bug - Fix warning about |msTotal|.  r=me.

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extra : rebase_source : 2a37ef3091fc90aef70a9ac982123e18cd1c82c1