Updated iOS/iPhoneSimulator build support

base/builtin/builtin.odin

@@ -145,7 +145,7 @@ ODIN_OS_STRING                  :: ODIN_OS_STRING
 
 /*
 	An `enum` value indicating the platform subtarget, chosen using the `-subtarget` switch.
-	Possible values are: `.Default` `.iOS`, and `.Android`.
+	Possible values are: `.Default` `.iOS`, .iPhoneSimulator, and `.Android`.
 */
 ODIN_PLATFORM_SUBTARGET         :: ODIN_PLATFORM_SUBTARGET
 

base/runtime/core.odin

@@ -558,6 +558,7 @@ ALL_ODIN_OS_TYPES :: Odin_OS_Types{
 	Odin_Platform_Subtarget_Type :: enum int {
 		Default,
 		iOS,
+		iPhoneSimulator
 		Android,
 	}
 */

base/runtime/heap_allocator_unix.odin

@@ -3,7 +3,7 @@
 package runtime
 
 when ODIN_OS == .Darwin {
-	foreign import libc "system:System.framework"
+	foreign import libc "system:System"
 } else {
 	foreign import libc "system:c"
 }