get_conf/set_conf now shows parameters for rigctl and rotctl. Using it with rigctld and rotctld sends output to console instead of remote client

https://github.com/Hamlib/Hamlib/issues/971

tests/dumpcaps.h

@@ -0,0 +1,3 @@
+#include <hamlib/rig.h>
+
+int dumpconf_list(RIG *rig, FILE *fout);

tests/dumpcaps_rot.h

@@ -0,0 +1,3 @@
+#include <hamlib/rig.h>
+
+int dumpconf_list(ROT *rot, FILE *fout);