(core) Upgrade to v1.0.0 of the paho mqtt client.

The artifacts are provided by a fork of the official v1.0.0 which has
been published in a manner which allows SBT to consume it.  Upstream,
there is a fix in place, but it's not available in a stable release
until v1.0.1.  Once v1.0.1 is released, then this project can revert
to the official channels.
(core) Switch to officially released paho client 1.0.1

The Sprily patched release is redundant now that 1.0.1 is officially
released.
Merge branch 'paho-v1.0'

Conflicts:
	project/Build.scala