Automated checkin: version bump for firefox 18.0 release. DONTBUILD CLOSED TREE a=release

--HG--
branch : GECKO180_2013010417_RELBRANCH
Added FIREFOX_18_0_RELEASE FIREFOX_18_0_BUILD1 tag(s) for changeset 8efe34fa2289. DONTBUILD CLOSED TREE a=release

--HG--
branch : GECKO180_2013010417_RELBRANCH
Added tag SEAMONKEY_2_15_BUILD1 for changeset FIREFOX_18_0_BUILD1. CLOSED TREE a=release

--HG--
branch : GECKO180_2013010417_RELBRANCH
Added tag SEAMONKEY_2_15_RELEASE for changeset FIREFOX_18_0_BUILD1. CLOSED TREE a=release

--HG--
branch : GECKO180_2013010417_RELBRANCH