Log Message:
Update py-foolscap to 0.10.0:

* Release 0.10.0 (15-Jan-2015)

** Compatibility Fixes

This release is compatible with Twisted-15.3.0 through 15.5.0. A change in
15.3.0 triggered a bug in Foolscap which produced a somewhat-infinite series
of log messages when run under `twistd`. This release fixes that bug, and
slightly changes the semantics of calling `log.msg()` with additional
parameters. (#244)

Foolscap no longer claims compatibility with python-2.6.x . Twisted-15.5.0
was the last release to offer 2.6 support, and subsequent releases actively
throw errors when run against 2.6, so we've turned off Foolscap's automated
testing for 2.6. It may remain compatible by accident for a while. (#245)