AI 145911: ADT #1778786: tool to generate stubbed jar file.

This is only a preliminary CL. More will follow but this is
  a good start, with the following caveats:
  What it does:
  - take an input jar, a list of includes, a list of excludes.
  - generate actual Java source for the filtered classes.
  What it doesn't do yet:
  - some more work on filtering inner elements (methods, etc.)
  - properly generate inner classes.
  - hide synthetic fields.
  - some classes body are missing
  - directly generate a stubbed bytecode/jar rather than source.
  I'll likely want to keep the source generator for debugging
  purposes or if we want to integrate with a build system instead.
  - classpath will be changed in the final CL to refer to the external
  ASM lib rather than the project. I need the source for debugging
  rigth now.
  - will review comments before submitting.
  BUG=1778786

Automated import of CL 145911

tools/mkstubs/tests/data/TestInnerClass.java

@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2009 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.
+ */
+
+package data;
+
+
+/**
+ * 
+ */
+public class TestInnerClass {
+
+    private final String mArg;
+
+    private class InnerPrivClass {
+    }
+
+    public class InnerPubClass {
+    }
+
+    private static final class InnerStaticClass {
+    }
+    
+    public TestInnerClass() {
+        mArg = null;
+    }
+    
+    public TestInnerClass(String arg) {
+        mArg = arg;
+    }
+
+    public String getArg() {
+        return mArg;
+    }
+
+    public InnerPubClass getInnerPubClass() {
+        return new InnerPubClass();
+    }
+    
+}