Add phase method forgotten in last commit.

Headers/AppKit/NSEvent.h

@@ -434,6 +434,7 @@ typedef NSUInteger NSEventSwipeTrackingOptions;
 #endif
 
 #if OS_API_VERSION(MAC_OS_X_VERSION_10_7, GS_API_LATEST)
+- (NSEventPhase) phase;
 - (NSEventPhase) momentumPhase;
 #endif
 @end

Source/NSEvent.m

@@ -1234,6 +1234,12 @@ static const char *eventTypes[] = {
   return 0;
 }
 
+- (NSEventPhase) phase
+{
+  // FIXME
+  return NSEventPhaseNone;
+}
+
 - (NSEventPhase) momentumPhase
 {
   // FIXME