* Added bacnet_str functions for parsing various numeric strings.
* Renamed BACnet string API to be clearer when no stdlib function exists.
* Fixed incompatible types - from 'BACNET_UNSIGNED_INTEGER *' to 'unsigned long *' warning
* Changed bacnet-str-to functions to use ERANGE for error detection.
* Refactored some apps to use common string parsing for BACnet data types.
* Refactor bacapp_parse_application_data to use bacnet_string_to_unsigned for better clarity
* Added strtol for BACnetEventType.
* Added Who-Am-I-Request encoding, decoding, unit tests, and command line application bacwhoami.
* Added You-Are-Request encoding, decoding, unit tests, and command line application bacyouare.
* Added Who-Am-I with Who-Is and You-Are handling into the example server application when run as device 4194303.
Steve Karg