PT-48287493 - Polycom device files cleaner task run on setup fails if there is a problem with deleteing the device files. This causes a problem with config not being able to start.
Merge branch 'device-files-cleaner-setup-fix' into release-4.6-unstable

Conflicts:
	sipXpolycom/src/org/sipfoundry/sipxconfig/phone/polycom/DeviceFilesCleaner.java