Provide code example for as_strncpy() doc.
AER-2444 - utility cleanup - removed depracated base64 API.
AER-2545 - setting TTL via UDF - add a record hook and function for setting time to live (TTL).
Check for null src in as_strncpy()
Added cf_getns().
AER-2278 - Key storage - add hooks for dropping a record's key.
AER-2278 - Key storage - added declaration of as_rec_drop_key().
Add little endian swap methods.