Adding mozilla libraries required by Firefox interop test.

third_party/mozdownload/PKG-INFO

Index: third_party/mozdownload/PKG-INFO
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+Metadata-Version: 1.0
+Name: mozdownload
+Version: 1.6
+Summary: Script to download builds for Firefox and Thunderbird from the Mozilla server.
+Home-page: http://github.com/mozilla/mozdownload
+Author: Mozilla Automation and Testing Team
+Author-email: tools@lists.mozilla.com
+License: Mozilla Public License 2.0 (MPL 2.0)
+Description: # mozdownload
+        
+        [mozdownload](https://github.com/mozilla/mozdownload)
+        is a [python package](http://pypi.python.org/pypi/mozdownload)
+        which handles downloading of Mozilla applications.
+        
+        ## Command Line Usage
+        
+        The `mozdownload` command will download the application based on the provided
+        command line options.
+        
+        ### Examples
+        
+        Download the latest official Firefox release for your platform:
+        
+            mozdownload --version=latest
+        
+        Download the latest Firefox Aurora build for Windows (32bit):
+        
+            mozdownload --type=daily --branch=mozilla-aurora --platform=win32
+        
+        Download the latest official Thunderbird release for your platform: 
+        
+            mozdownload --application=thunderbird --version=latest
+        
+        Download the latest Earlybird build for Linux (64bit): 
+        
+            mozdownload --application=thunderbird --type=daily --branch=comm-aurora --platform=linux64
+        
+        Download this README file: 
+        
+            mozdownload --url=https://raw.github.com/mozilla/mozdownload/master/README.md
+        
+        Download a file from a URL protected with basic authentication: 
+        
+            mozdownload --url=http://example.com/secrets.txt --username=admin --password=password
+        
+        Run `mozdownload --help` for detailed information on the command line options.
+        
+Keywords: mozilla
+Platform: UNKNOWN