Automated checkin: version bump for fennec 20.0b5 release. DONTBUILD CLOSED TREE a=release

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branch : MOBILE200b5_2013031319_RELBRANCH
Added FENNEC_20_0b5_RELEASE FENNEC_20_0b5_BUILD1 tag(s) for changeset 3b1039f3caa8. DONTBUILD CLOSED TREE a=release

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branch : MOBILE200b5_2013031319_RELBRANCH