Revert "Make libbcc public."

This reverts commit 80232dd16c0affb2afae01cde6c94abf23ac1ba8.
diff --git a/lib/ExecutionEngine/Script.h b/lib/ExecutionEngine/Script.h
new file mode 100644
index 0000000..aaa5eba
--- /dev/null
+++ b/lib/ExecutionEngine/Script.h
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2010-2012, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef BCC_EXECUTION_ENGINE_SCRIPT_H
+#define BCC_EXECUTION_ENGINE_SCRIPT_H
+
+namespace bcc {
+
+class Source;
+
+class Script {
+private:
+  // This is the source associated with this object and is going to be
+  // compiled.
+  Source *mSource;
+
+protected:
+  // This hook will be invoked after the script object is succssfully reset
+  // itself.
+  virtual bool doReset()
+  { return true; }
+
+public:
+  Script(Source &pSource) : mSource(&pSource) { }
+
+  virtual ~Script() { }
+
+  // Reset this object with the new source supplied. Return false if this
+  // object remains unchanged after the call (e.g., the supplied source is
+  // the same with the one contain in this object.) If pPreserveCurrent is
+  // false, the current containing source will be destroyed after successfully
+  // reset.
+  bool reset(Source &pSource, bool pPreserveCurrent = false);
+
+  // Merge (or link) another source into the current source associated with
+  // this Script object. Return false on error.
+  //
+  // This is equivalent to the call to Script::merge(...) on mSource.
+  bool mergeSource(Source &pSource, bool pPreserveSource = false);
+
+  inline Source &getSource()
+  { return *mSource; }
+  inline const Source &getSource() const
+  { return *mSource; }
+};
+
+} // end namespace bcc
+
+#endif  // BCC_EXECUTION_ENGINE_SCRIPT_H