Add labels to rewrapper cc compile action. Prevent ccwrapper from being
used in links.

Test: Built aosp-arm64_eng with and without USE_RBE=1

Change-Id: I8d04069219a9467c3de9a028eb68e3115173f1e2
diff --git a/core/java_renderscript.mk b/core/java_renderscript.mk
index 820967a..672863b 100644
--- a/core/java_renderscript.mk
+++ b/core/java_renderscript.mk
@@ -139,6 +139,7 @@
     $(rs_support_lib) $(rs_support_io_lib) $(rs_jni_lib) $(rs_compiler_rt)
 $(rs_compatibility_jni_libs): $(BCC_COMPAT)
 $(rs_compatibility_jni_libs): PRIVATE_CXX := $(CXX_WRAPPER) $(CLANG_CXX)
+$(rs_compatibility_jni_libs): PRIVATE_CXX_LINK := $(CLANG_CXX)
 $(rs_compatibility_jni_libs): PRIVATE_SDK_VERSION := $(my_min_sdk_version)
 $(rs_compatibility_jni_libs): $(renderscript_intermediate)/librs.%.so: \
     $(renderscript_intermediate.bc_folder)%.bc \