Add AirPlay support

Limelight/Database/DataManager.h

@@ -43,7 +43,8 @@
                        touchMode:(NSInteger)touchMode
                     statsOverlay:(BOOL)statsOverlay
                    allowPortrait:(BOOL)allowPortrait
-              resolutionSelected:(NSInteger)resolutionSelected;
+              resolutionSelected:(NSInteger)resolutionSelected
+             externalDisplayMode:(NSInteger)externalDisplayMode;
 
 - (NSArray*) getHosts;
 - (void) updateHost:(TemporaryHost*)host;

Limelight/Database/DataManager.m

@@ -82,7 +82,8 @@
                        touchMode:(NSInteger)touchMode
                     statsOverlay:(BOOL)statsOverlay 
                    allowPortrait:(BOOL)allowPortrait
-              resolutionSelected:(NSInteger)resolutionSelected {
+              resolutionSelected:(NSInteger)resolutionSelected
+             externalDisplayMode:(NSInteger)externalDisplayMode {
     
     [_managedObjectContext performBlockAndWait:^{
         Settings* settingsToSave = [self retrieveSettings];
@@ -117,7 +118,7 @@
         settingsToSave.statsOverlay = statsOverlay;
         settingsToSave.allowPortrait = allowPortrait;
         settingsToSave.resolutionSelected = [NSNumber numberWithInteger:resolutionSelected];
-        
+        settingsToSave.externalDisplayMode = [NSNumber numberWithInteger:externalDisplayMode];
         [self saveData];
     }];
 }

Limelight/Database/TemporarySettings.h

@@ -34,6 +34,7 @@
 @property (nonatomic, retain) NSNumber * pointerVelocityModeDivider;
 @property (nonatomic, retain) NSString * uniqueId;
 @property (nonatomic, retain) NSNumber * resolutionSelected;
+@property (nonatomic, retain) NSNumber * externalDisplayMode;
 @property (nonatomic) enum {
     CODEC_PREF_AUTO,
     CODEC_PREF_H264,

Limelight/Database/TemporarySettings.m

@@ -100,6 +100,7 @@
     self.pointerVelocityModeDivider = settings.pointerVelocityModeDivider;
     self.allowPortrait = settings.allowPortrait;
     self.resolutionSelected = settings.resolutionSelected;
+    self.externalDisplayMode = settings.externalDisplayMode;
 #endif
     self.uniqueId = settings.uniqueId;