John Kelly added TFTP support to libcurl. A bunch of new error codes was

added. TODO: add them to docs. add TFTP server to test suite. add TFTP to
list of protocols whereever those are mentioned.

lib/version.c

@@ -81,6 +81,9 @@ char *curl_version(void)
 /* data for curl_version_info */
 
 static const char * const protocols[] = {
+#ifndef CURL_DISABLE_TFTP
+  "tftp",
+#endif
 #ifndef CURL_DISABLE_FTP
   "ftp",
 #endif