Ruby

erb: multiline anchors

• bin/erb (ARGV.switch, ERB::Main#run): use beginning/end of
  string anchors instead of beginning/end of line anchors.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47994 b2dd03c8-39d4-4d8f-98ff-823fe69b080e