Automated checkin: version bump for firefox 25.0 release. DONTBUILD CLOSED TREE a=release

--HG--
branch : GECKO250_2013102517_RELBRANCH
Added FIREFOX_25_0_RELEASE FIREFOX_25_0_BUILD3 tag(s) for changeset d86ad7db1de3. DONTBUILD CLOSED TREE a=release

--HG--
branch : GECKO250_2013102517_RELBRANCH