Merge branch 'develop' of github.com-obscure:ethereum/go-ethereum into develop

Conflicts:
	accounts/account_manager.go

ui/frontend.go

@@ -0,0 +1,18 @@
+package ui
+
+// ReturnInterface is returned by the Intercom interface when a method is called
+type ReturnInterface interface {
+	Get(i int) (interface{}, error)
+	Size() int
+}
+
+// Frontend is the basic interface for calling arbitrary methods on something that
+// implements a front end (GUI, CLI, etc)
+type Frontend interface {
+	// Checks whether a specific method is implemented
+	Supports(method string) bool
+	// Call calls the given method on interface it implements. This will return
+	// an error with errNotImplemented if the method hasn't been implemented
+	// and will return a ReturnInterface if it does.
+	Call(method string) (ReturnInterface, error)
+}