Move the swift.1 manpage to python-swiftclient

When someone split away python-swiftclient, he left behind the
client manpage.

Apparently all we need now is to delete it from swift and
add it to python-swiftclient. Except that of course the releases
have to be synchronized somehow or else files conflict.

Change-Id: I8b5f7b5557c28818048d8941df36473dacfb1d57
Merge "Move the swift.1 manpage to python-swiftclient"