Fix linking with -whole-module-optimization enabled

SwiftAppLibrary/SwiftAppLibrary.m

@@ -0,0 +1,13 @@
+#import "SwiftAppLibrary.h"
+
+@interface AClassInThisFramework : NSObject @end
+@implementation AClassInThisFramework @end
+
+void runNSApplication(void) {
+    NSApplication *app = [NSApplication sharedApplication];
+    NSBundle *bundle = [NSBundle bundleForClass:[AClassInThisFramework class]];
+    NSArray *topObjects;
+    [[[NSNib alloc] initWithNibNamed:@"MainMenu" bundle:bundle]
+     instantiateWithOwner:app topLevelObjects:&topObjects];
+    [app run];
+}