Merge changes I93edfd61,Icd23b542,I58c84607,Icfa73a75

* changes:
  Pass -fno-sanitize=vptr,function for musl
  Use musl rust prebuilts for USE_HOST_MUSL=true
  Don't package host cross modules in javaFuzzPackager
  Add rust musl arm and arm64 toolchains

java/fuzz.go

@@ -171,6 +171,10 @@ func (s *javaFuzzPackager) GenerateBuildActions(ctx android.SingletonContext) {
 			return
 		}
 
+		if javaFuzzModule.Target().HostCross {
+			return
+		}
+
 		fuzzModuleValidator := fuzz.FuzzModule{
 			javaFuzzModule.ModuleBase,
 			javaFuzzModule.DefaultableModuleBase,