Automated checkin: version bump for firefox 24.2.0esr release. DONTBUILD CLOSED TREE a=release

--HG--
branch : GECKO2420esr_2013120520_RELBRANCH
Added FIREFOX_24_2_0esr_RELEASE FIREFOX_24_2_0esr_BUILD2 tag(s) for changeset e408ebe9e449. DONTBUILD CLOSED TREE a=release

--HG--
branch : GECKO2420esr_2013120520_RELBRANCH