Update libbcc for LLVM rebase to r222494.

Change-Id: Idebd60a98bbe62007086386e5497d1df7d901e3d
diff --git a/lib/Renderscript/RSScript.cpp b/lib/Renderscript/RSScript.cpp
index 2dadc66..c93ca64 100644
--- a/lib/Renderscript/RSScript.cpp
+++ b/lib/Renderscript/RSScript.cpp
@@ -40,8 +40,7 @@
         &pScript.getSource().getModule(), &libclcore_source->getModule());
   }
 
-  if (!pScript.getSource().merge(*libclcore_source,
-                                 /* pPreserveSource */false)) {
+  if (!pScript.getSource().merge(*libclcore_source)) {
     ALOGE("Failed to link Renderscript library '%s'!", core_lib);
     delete libclcore_source;
     return false;