kvjc.h: changed MAXIMUM_NUMBER_OF_CONNECTION_STATES from 0x0f to 0x10 - rfc 1144
vjcinit.c: initialize_vjc - check for vjc.enabled = TRUE before initializing.

vjcinit.c: added vjc_reset_connection_states() to flush all the
connection_state structures. Called from PPP when the link goes down.

Naveen.P.N. 22/04/1997
In file kvjc.h enum FIELD_TYPE is renamed to VJC_FIELD_TYPE and corr changes
are made in .c files

enum COMMUNICATION_MODE, PACKET_DIRECTION and HEADER_AGE are included
under conditional compliation to avoid clash between same enums in the 
CIPX module.


