Rename Protocol->Register() to Protocol->Install(), add missing header changes

sdk/xtdk/bltypes.h

@@ -259,8 +259,8 @@ typedef struct _XTBL_LOADER_PROTOCOL
     struct
     {
         PBL_GET_MODULES_LIST GetModulesList;
+        PBL_REGISTER_XT_PROTOCOL Install;
         PBL_OPEN_XT_PROTOCOL Open;
-        PBL_REGISTER_XT_PROTOCOL Register;
     } Protocol;
     struct
     {