Automated checkin: version bump for firefox 23.0b2 release. DONTBUILD CLOSED TREE a=release

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branch : GECKO230b2_2013070117_RELBRANCH
Added FIREFOX_23_0b2_RELEASE FIREFOX_23_0b2_BUILD1 tag(s) for changeset eb3499a7575d. DONTBUILD CLOSED TREE a=release

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branch : GECKO230b2_2013070117_RELBRANCH