iSense optional UART support for large packets as "Large_Uart".
IPv6 - Serial Line IP support and some other changes:

uart_radio: SLIP support
ICMPv6: Support for the SLIP ND
lowpan_config.h: added option for the SLIP and the radio timeout
Interface mgr: UART address bug
Routing: Send to the UART if there is no address defined

6LoWPAN: CID copy bug
Radio reassembling: Only 1 timer for each packet
IPv6 application: ND start note, show addressing
IPv6: Ext.header processing bug, send messages with defined target interface and address with higher priority
Move iSense large uart from the OS to the application.
IPv6 SLIP is off by default.
Merge branch 'IPv6_SLIP'