Automated checkin: version bump for firefox 24.0b7 release. DONTBUILD CLOSED TREE a=release

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branch : GECKO240b7_2013082916_RELBRANCH
Added FIREFOX_24_0b7_RELEASE FIREFOX_24_0b7_BUILD1 tag(s) for changeset 0422783b9c2f. DONTBUILD CLOSED TREE a=release

--HG--
branch : GECKO240b7_2013082916_RELBRANCH