socketserver module seems to conflict with builtin socketserver

[pytestbot]

• Bitbucket: https://bitbucket.org/hpk42/execnet/issue/45
• Originally reported by: @nicoddemus
• Originally created at: 2015-07-24T00:34:39.206

As reported by @jduponchelle in this pytest issue, it seems execnet.script.socketserver.py might conflict with builtin socketserver module depending on which is imported first.

@jduponchelle suggested to rename the module to something else.