Automated checkin: version bump for firefox 25.0b7 release. DONTBUILD CLOSED TREE a=release

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branch : GECKO250b7_2013101020_RELBRANCH
Added FIREFOX_25_0b7_RELEASE FIREFOX_25_0b7_BUILD1 tag(s) for changeset 8b2c180a7b5d. DONTBUILD CLOSED TREE a=release

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branch : GECKO250b7_2013101020_RELBRANCH