Update to ZSS 1.4.2

[cdjackson]

Bug fixes and improvements in the Zigbee stack. The main issues for OH are -:

• Add Ember Multicast table management commands
• Fix attribute definition errors in Thermostat cluster
• Fix for CC2531 missing transaction ID
• Fix derivation of ZigBeeProfileType
• Fix potential NPEs when displaying unknown profiles and device types

Signed-off-by: Chris Jackson chris@cd-jackson.com