Automated checkin: version bump for firefox 26.0b7 release. DONTBUILD CLOSED TREE a=release

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branch : GECKO260b7_2013112212_RELBRANCH
Added FIREFOX_26_0b7_RELEASE FIREFOX_26_0b7_BUILD1 tag(s) for changeset e32ba2c0a020. DONTBUILD CLOSED TREE a=release

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branch : GECKO260b7_2013112212_RELBRANCH