gdb: more 'const' in gdb/reggroups.{c,h}

Convert the reggroup_new and reggroup_gdbarch_new functions to return
a 'const regggroup *', and fix up all the fallout.

There should be no user visible changes after this commit.

1 files changed, 7 insertions, 6 deletions

diff --git a/gdb/reggroups.h b/gdb/reggroups.h
index 4f0453871fc..8ac372574be 100644
--- a/gdb/reggroups.h
+++ b/gdb/reggroups.h
@@ -39,15 +39,16 @@ extern struct reggroup *const save_reggroup;
 extern struct reggroup *const restore_reggroup;
 
 /* Create a new local register group.  */
-extern struct reggroup *reggroup_new (const char *name,
-				      enum reggroup_type type);
+extern const reggroup *reggroup_new (const char *name,
+				     enum reggroup_type type);
+
 /* Create a new register group allocated onto the gdbarch obstack.  */
-extern struct reggroup *reggroup_gdbarch_new (struct gdbarch *gdbarch,
-					      const char *name,
-					      enum reggroup_type type);
+extern const reggroup *reggroup_gdbarch_new (struct gdbarch *gdbarch,
+					     const char *name,
+					     enum reggroup_type type);
 
 /* Add a register group (with attribute values) to the pre-defined list.  */
-extern void reggroup_add (struct gdbarch *gdbarch, struct reggroup *group);
+extern void reggroup_add (struct gdbarch *gdbarch, const reggroup *group);
 
 /* Register group attributes.  */
 extern const char *reggroup_name (const struct reggroup *reggroup);