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

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branch : MOBILE260_2013120510_RELBRANCH
Added FENNEC_26_0_RELEASE FENNEC_26_0_BUILD2 tag(s) for changeset 6f83870c1811. DONTBUILD CLOSED TREE a=release

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branch : MOBILE260_2013120510_RELBRANCH