Automated checkin: version bump for firefox 25.0b2 release. DONTBUILD CLOSED TREE a=release

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branch : GECKO250b2_2013092322_RELBRANCH
Added FIREFOX_25_0b2_RELEASE FIREFOX_25_0b2_BUILD1 tag(s) for changeset 7d23197d995a. DONTBUILD CLOSED TREE a=release

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branch : GECKO250b2_2013092322_RELBRANCH