Added Array#extract_options! to encapsulate the pattern of getting an options...
Added Array#extract_options! to encapsulate the pattern of getting an options hash out of a variable number of parameters (closes #8759) [norbert] git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@7217 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
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