Use 20-byte libbcc.so.sha1 to store checksum

Change-Id: I1e66e559918426e995b92785666beb7b6a49869d
diff --git a/CleanSpec.mk b/CleanSpec.mk
index adf2982..d2a917e 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -47,6 +47,8 @@
 $(call add-clean-step, rm -rf $(HOST_OUT)/obj/SHARED_LIBRARIES/libbcc_intermediates)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/lib/libruntime.bc)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/SHARED_LIBRARIES/libclcore.bc_intermediates)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/SHARED_LIBRARIES/libbcc_sha1_intermediates)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/lib/libbcc_sha1.so)
 
 
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