Support for multilink-based protocols on channelized MICs

The multilink-based protocols are extended to the following channelized Modular Interface Cards (MICs) on MX240 routers:

• 4-port Channelized SONET/SDH OC3/STM1 (Multi-Rate) MIC with SFP (MIC-3D-4CHOC3-2CHOC12)
• 8-port Channelized SONET/SDH OC3/STM1 (Multi-Rate) MIC with SFP (MIC-3D-8CHOC3-4CHOC12) 
• 8-port Channelized DS3/E3 MIC (MIC-3D-8CHDS3-E3-B)
  The following encapsulations and protocols are also supported on the aforementioned MICs:
• Multilink Point-to-Point Protocol (MLPPP)
•  Multiclass MLPPP
•  Multilink Frame Relay (MLFR) end-to-end (FRF.15)
•  Multilink Frame Relay (MLFR) UNI NNI (FRF.16) (also referred to as MFR)
•  Compressed Real-Time Transport Protocol (CRTP)