Only build libclang.so in bundled branches.

Change-Id: I42a1f7e2826fea0cd7cd8fb0e00c4582501f0df5
diff --git a/host_shared_clang.mk b/host_shared_clang.mk
index 36b417d..f2ce5a9 100644
--- a/host_shared_clang.mk
+++ b/host_shared_clang.mk
@@ -1,3 +1,6 @@
+# Don't build the library in unbundled branches.
+ifeq (,$(TARGET_BUILD_APPS))
+
 LOCAL_PATH:= $(call my-dir)
 
 LOCAL_IS_HOST_MODULE := true
@@ -29,3 +32,5 @@
 
 include $(CLANG_HOST_BUILD_MK)
 include $(BUILD_HOST_SHARED_LIBRARY)
+
+endif # don't build in unbundled branches
\ No newline at end of file