Xcode++
++expecta and ++specta
Remove references to EXTConcreteProtocol and dependencies.
++libextobjc
Merge pull request #281 from github/xcode46

Xcode++ and bumped specta and expecta and libextobjc
Merge pull request #282 from EnthusiasticCode/remove-extconcreteprotocol

Remove references to EXTConcreteProtocol and dependencies.