iOS, use gcc3 mac code for simulator

Refer to the mac code, instead of copying it to gcc3_ios, when
running in simulator.

There is a problem with the macro calls, so the reference to the sources
are duplicated.

Change-Id: I72848ba960b8a7f85708723bfeb682ceecc1e448

bridges/Library_cpp_uno.mk

@@ -10,9 +10,14 @@
 $(eval $(call gb_Library_Library,$(gb_CPPU_ENV)_uno))
 
 ifeq ($(OS),IOS)
+ifeq ($(CPUNAME),X86_64)
+bridges_SELECTED_BRIDGE := gcc3_macosx_x86-64
+bridge_noopt_objects := cpp2uno except uno2cpp abi call callvirtualmethod
+else
 bridges_SELECTED_BRIDGE := gcc3_ios
 bridge_noopt_objects := cpp2uno cpp2uno-simulator except uno2cpp uno2cpp-simulator callvirtualmethod abi call
 bridge_asm_objects := ios64_helper
+endif
 
 else ifeq ($(CPUNAME),ARM)