Rename getline function to unsafe, to make it greppable.

Now i can trim them one-by-one.

dpip/dpip.cc

@@ -215,7 +215,7 @@ int a_Dpip_check_auth(const char *auth_tag)
    fname = dStrconcat(dGethomedir(), "/.flenser/dpid_comm_keys", NULL);
    if ((In = fopen(fname, "r")) == NULL) {
       MSG_ERR("[a_Dpip_check_auth] %s\n", dStrerror(errno));
-   } else if ((rcline = dGetline(In)) == NULL) {
+   } else if ((rcline = dGetline_unsafe(In)) == NULL) {
       MSG_ERR("[a_Dpip_check_auth] empty file: %s\n", fname);
    } else {
       port = strtol(rcline, &tail, 10);