Ruby 1.9 compat: script encoding should be explicitly defined by magic comment

Ruby 1.9.1 preview 2 + Edge Rails still fails in "rails" command with the following error, and this patch is still effective to fix the problem. Any reason to put off the commit?

% ruby19 ~/src/rails/railties/bin/rails test_app
$RAILS_DIR/activesupport/lib/active_support/core_ext/integer/inflections.rb:1:in `require':
$RAILS_DIR/activesupport/lib/active_support/inflector.rb:286: invalid multibyte char (US-ASCII) (SyntaxError)
$RAILS_DIR/activesupport/lib/active_support/inflector.rb:286: invalid multibyte char (US-ASCII)
$RAILS_DIR/activesupport/lib/active_support/inflector.rb:286: syntax error, unexpected $end, expecting ')'
    elsif "foo" != Inflector.transliterate("föö")
                                               ^
	from $RAILS_DIR/activesupport/lib/active_support/core_ext/integer/inflections.rb:1:in `<top (required)>'
	from $RAILS_DIR/activesupport/lib/active_support/core_ext/integer.rb:2:in `require'
	from $RAILS_DIR/activesupport/lib/active_support/core_ext/integer.rb:2:in `<top (required)>'
	from $RAILS_DIR/activesupport/lib/active_support/core_ext.rb:3:in `require'
	from $RAILS_DIR/activesupport/lib/active_support/core_ext.rb:3:in `block in <top (required)>'
	from $RAILS_DIR/activesupport/lib/active_support/core_ext.rb:1:in `each'
	from $RAILS_DIR/activesupport/lib/active_support/core_ext.rb:1:in `<top (required)>'
	from $RAILS_DIR/activesupport/lib/active_support.rb:55:in `require'
	from $RAILS_DIR/activesupport/lib/active_support.rb:55:in `<top (required)>'
	from $RAILS_DIR/railties/lib/rails_generator.rb:28:in `require'
	from $RAILS_DIR/railties/lib/rails_generator.rb:28:in `<top (required)>'
	from $RAILS_DIR/railties/bin/rails:13:in `require'
	from $RAILS_DIR/railties/bin/rails:13:in `<main>'

Automatic cleanup of spam.

Automatic cleanup of spam.

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