Merge pull request #565 from herby/requirejs-wip

Pluggable Exporters included plus few fixes.
Merge pull request #567 from herby/requirejs-wip

Transport type 'amd' is outputted fine from IDE as well as amberc
Merge pull request #570 from herby/requirejs-wip

updated amdefine; define catches unnamed module early
Merge remote-tracking branch 'upstream/requirejs' into requirejs-with-folder-restructure