Automated checkin: version bump for fennec 26.0b4 release. DONTBUILD CLOSED TREE a=release

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branch : MOBILE260b4_2013111118_RELBRANCH
Added FENNEC_26_0b4_RELEASE FENNEC_26_0b4_BUILD1 tag(s) for changeset 268525483f9e. DONTBUILD CLOSED TREE a=release

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branch : MOBILE260b4_2013111118_RELBRANCH