Add Robolectric build and license files to third_party.

third_party/robolectric/licenses/extreme.indiana.edu.license.txt

+Indiana University Extreme! Lab Software License
+
+Version 1.1.1
+
+Copyright (c) 2002 Extreme! Lab, Indiana University. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without 
+modification, are permitted provided that the following conditions 
+are met:
+
+1. Redistributions of source code must retain the above copyright notice, 
+   this list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright 
+   notice, this list of conditions and the following disclaimer in 
+   the documentation and/or other materials provided with the distribution.
+
+3. The end-user documentation included with the redistribution, if any, 
+   must include the following acknowledgment:
+
+  "This product includes software developed by the Indiana University 
+  Extreme! Lab (http://www.extreme.indiana.edu/)."
+
+Alternately, this acknowledgment may appear in the software itself, 
+if and wherever such third-party acknowledgments normally appear.
+
+4. The names "Indiana Univeristy" and "Indiana Univeristy Extreme! Lab" 
+must not be used to endorse or promote products derived from this 
+software without prior written permission. For written permission, 
+please contact http://www.extreme.indiana.edu/.
+
+5. Products derived from this software may not use "Indiana Univeristy" 
+name nor may "Indiana Univeristy" appear in their name, without prior 
+written permission of the Indiana University.
+
+THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
+WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+IN NO EVENT SHALL THE AUTHORS, COPYRIGHT HOLDERS OR ITS CONTRIBUTORS
+BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+