Fix 2 outstanding bugs#8

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bloopletech wants to merge 3 commits intogaizka:masterfrom

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Commits on Dec 4, 2012

Fix for 'class Xyz::Abc'
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Fixes a bug in RubyLex (apparently standing for 12 years) where if you have '=end' as the last line of a file and the file has no final '\n', RubyLex loops forever.
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Commits on Dec 19, 2012

Add monkeypatch from https://github.com/pbogdan/rtags/commit/3bbde0872af08f71f99cef5a02999f24b34eb5cf
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