Fix AccessSemantics for function typedefs and "dynamic".

R=johnniwinther@google.com, scheglov@google.com

Review URL: https://codereview.chromium.org//712313004

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41669 260f80e4-7a28-3924-810f-c04153c831b5
Add language tests for bugs 21565 and 21566.

R=brianwilkerson@google.com, floitsch@google.com

Review URL: https://codereview.chromium.org//716683002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41670 260f80e4-7a28-3924-810f-c04153c831b5