git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@29664 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merges r29201 from trunk into ruby_1_9_2.¶
that it ignores characters after = in ENV.
patched by Jeremy Evans [ruby-core:32184]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@29664 b2dd03c8-39d4-4d8f-98ff-823fe69b080e