Automated checkin: version bump for firefox 22.0b2 release. DONTBUILD CLOSED TREE a=release

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branch : GECKO220b2_2013052200_RELBRANCH
Added FIREFOX_22_0b2_RELEASE FIREFOX_22_0b2_BUILD1 tag(s) for changeset 1b5782f637b3. DONTBUILD CLOSED TREE a=release

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branch : GECKO220b2_2013052200_RELBRANCH