add new API cs_group_name() to return group name in string, given the group id
diff --git a/arch/Sparc/SparcModule.c b/arch/Sparc/SparcModule.c
index a1dc05e..a44c4bc 100644
--- a/arch/Sparc/SparcModule.c
+++ b/arch/Sparc/SparcModule.c
@@ -29,6 +29,7 @@
 	ud->reg_name = Sparc_reg_name;
 	ud->insn_id = Sparc_get_insn_id;
 	ud->insn_name = Sparc_insn_name;
+	ud->group_name = Sparc_group_name;
 
 	return CS_ERR_OK;
 }