Invoke Python explicitly when running scripts
Upload zip files to a platform-specific location
Find the s3credentials file on Windows
Disable NaCl to try to fix the Windows build
Set up the win_toolchain directory when updating, if needed

Pull in environment variables from env.bat
Use ninja.exe on Windows
Invoke s3put correctly on Windows

Copy s3put to a .py file on Windows

This is required for multiprocessing to work.
Copy the right binaries on Windows
Skip uploading symbols on Windows for now
Merge pull request #10 from brightray/windows-scripts

Get scripts working on Windows