Update code / examples / man pages with the updated function.
include/coap/libcoap.h:
Add in new define COAP_DEPRECATED to generate compiler warnings when used
include/coap/encode.h
New coap_encode_var_safe() function that includes the size of the output
buffer as a parameter.
Make coap_encode_var_bytes() a wrapper for coap_encode_var_safe() and
mark it as COAP_DEPRECATED for backwards compatability
src/encode.c:
New coap_encode_var_safe() function that includes the size of the output
buffer as a parameter.
examples/coap-server.c:
examples/contiki/server.c:
Make the ticks resource consistent in case