Create new options coap_uri_into_optlist(), coap_path_into_optlist() and
coap_query_into_optlist() to be used instead of coap_uri_into_options(),
coap_split_path() and coap_split_query() functions so the requirement
for a scratch buffer is not needed.
Getting the minimum size for a scratch buffer is not straight forward and
potential for unexpected boundary condition errors to occurif too small.
Correct parsing and stripping out of "%2E%2E" ("..") and "%2E" (".")
path segments. ".." now removes the previous segment (if it exists).
Update documentation and unit testcases.
Update examples to use new options.
coap_debug.h: Support logging level set to _COAP_LOG_EMERG
coap_pdu.h: handle small ints
coap_pdu_internal.h: handle small ints
coap_session_internal.h: handle small ints
coap_uthash_internal.h: handle small ints
coap_block.c: Handle small ints
coap_debug.c: Fix use of vsnprintf() and vfprintf()
coap_pdu.c: Handle small ints
coap_tinydtls.c: Handle small ints
coap_uri.c: Fix alignment issue in coap_new_uri()
uncrustify run on RIOT examples to conform to RIOT's coding standards/
Jon Shallow