Automated checkin: version bump for thunderbird 24.0b3 release. DONTBUILD CLOSED TREE a=release

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branch : GECKO240b3_2013091016_RELBRANCH
Added THUNDERBIRD_24_0b3_RELEASE THUNDERBIRD_24_0b3_BUILD1 tag(s) for changeset 36c11828950a. DONTBUILD CLOSED TREE a=release

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branch : GECKO240b3_2013091016_RELBRANCH