Change the API of bccPrepareSharedObject().

Change-Id: I2d0ecf6b062b52dc4b6b514d93ba8191920a00aa
diff --git a/lib/ExecutionEngine/Script.cpp b/lib/ExecutionEngine/Script.cpp
index 74f1f01..6e3774b 100644
--- a/lib/ExecutionEngine/Script.cpp
+++ b/lib/ExecutionEngine/Script.cpp
@@ -210,9 +210,7 @@
 }
 
 
-int Script::prepareSharedObject(char const *cacheDir,
-                                char const *cacheName,
-                                char const *objPath,
+int Script::prepareSharedObject(char const *objPath,
                                 char const *dsoPath,
                                 unsigned long flags) {
   // TODO: Support cached shared object.