swc-windows-installer.py: Add nesting setup/windows-installer/
authorW. Trevor King <wking@tremily.us>
Wed, 23 Oct 2013 19:34:45 +0000 (12:34 -0700)
committerW. Trevor King <wking@tremily.us>
Wed, 23 Oct 2013 19:34:45 +0000 (12:34 -0700)
Mimic the path that submodule users will have.

setup/windows-installer/swc-windows-installer.py [moved from setup/swc-windows-installer.py with 100% similarity]