Move/add %immutable in their files

Makes the other files less dependent on being included by
hamlib.swg and more self-contained.
Also drop the symbols that are ignored.

bindings/amplifier.swg

@@ -23,6 +23,11 @@
 #include <hamlib/amplifier.h>
 %}
 
+%immutable amp_caps::model_name;
+%immutable amp_caps::mfg_name;
+%immutable amp_caps::version;
+%immutable amp_caps::copyright;
+
 %include <hamlib/amplist.h>
 %include <hamlib/amplifier.h>
 

bindings/hamlib.swg

@@ -37,6 +37,17 @@
 
 %}
 
+/*
+ * symbols that shouldn't be changed
+ */
+%immutable clone_combo_get;
+%immutable clone_combo_set;
+%immutable confparams::dflt;
+%immutable confparams::label;
+%immutable confparams::name;
+%immutable confparams::tooltip;
+%immutable cs;
+
 /*
  * symbols that won't be wrapped
  */
@@ -197,26 +208,6 @@
 #endif
 #endif
 
-%immutable confparams::name;
-%immutable confparams::label;
-%immutable confparams::tooltip;
-%immutable confparams::dflt;
-%immutable cs;
-%immutable rig_caps::model_name;
-%immutable rig_caps::mfg_name;
-%immutable rig_caps::version;
-%immutable rig_caps::copyright;
-%immutable hamlib_version2;
-%immutable hamlib_copyright2;
-
-%immutable clone_combo_set;
-%immutable clone_combo_get;
-
-%immutable rot_caps::model_name;
-%immutable rot_caps::mfg_name;
-%immutable rot_caps::version;
-%immutable rot_caps::copyright;
-
 %include <hamlib/rig_dll.h>
 
 %inline {

bindings/rig.swg

@@ -22,6 +22,11 @@
 #include <hamlib/rig.h>
 %}
 
+%immutable rig_caps::model_name;
+%immutable rig_caps::mfg_name;
+%immutable rig_caps::version;
+%immutable rig_caps::copyright;
+
 %include <hamlib/riglist.h>
 %include <hamlib/rig.h>
 

bindings/rotator.swg

@@ -22,6 +22,11 @@
 #include <hamlib/rotator.h>
 %}
 
+%immutable rot_caps::model_name;
+%immutable rot_caps::mfg_name;
+%immutable rot_caps::version;
+%immutable rot_caps::copyright;
+
 %include <hamlib/rotator.h>
 %include <hamlib/rotlist.h>