Automated checkin: version bump for fennec 24.0b2 release. DONTBUILD CLOSED TREE a=release

--HG--
branch : MOBILE240b2_2013081220_RELBRANCH
Added FENNEC_24_0b2_RELEASE FENNEC_24_0b2_BUILD1 tag(s) for changeset 3fa6204004ee. DONTBUILD CLOSED TREE a=release

--HG--
branch : MOBILE240b2_2013081220_RELBRANCH