include isc/region.h and new omapi/types.h
typedefs moved to omapi/types.h
define protocol port to 7912 so as not to conflict with dhcp server;
this clearly needs more thought. the default omapi port will need to be
server specific rather than library specific.
new public functions, omapi_listener_shutdown, omapi_data_getint.
changed API, omapi_string_totext, omapi_value_getint