Build app bundles on OS X. Fixes the issue where the menubar would not appear.

src/citra_qt/CMakeLists.txt

@@ -64,7 +64,11 @@ else()
     qt4_wrap_ui(UI_HDRS ${UIS})
 endif()
 
-add_executable(citra-qt ${SRCS} ${HEADERS} ${UI_HDRS})
+if (APPLE)
+    add_executable(citra-qt MACOSX_BUNDLE ${SRCS} ${HEADERS} ${UI_HDRS})
+else()
+    add_executable(citra-qt ${SRCS} ${HEADERS} ${UI_HDRS})
+endif()
 target_link_libraries(citra-qt core common video_core qhexedit)
 target_link_libraries(citra-qt ${OPENGL_gl_LIBRARY} ${CITRA_QT_LIBS})
 target_link_libraries(citra-qt ${PLATFORM_LIBRARIES})