Added -ObjC and -all_load linker flags (to headless linker settings).

Author: osinoleg

cocos2d-tests-android/Headless.xcodeproj/project.pbxproj

@@ -1011,6 +1011,8 @@
 				OTHER_LDFLAGS = (
 					"-landroid",
 					"-lgles_apportable",
+					"-all_load",
+					"-ObjC",
 				);
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				WRAPPER_EXTENSION = app;
@@ -1042,6 +1044,8 @@
 				OTHER_LDFLAGS = (
 					"-landroid",
 					"-lgles_apportable",
+					"-all_load",
+					"-ObjC",
 				);
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				WRAPPER_EXTENSION = app;