License 3-clause BSD

Update to license information

src/misc/dstring.c

@@ -1,6 +1,11 @@
 /* -----------------------------------------------------------------
 FILE:    dstring.c
 DESCRIPTION:This file contains the routines for manipulating dynamic strings.
+
+Copyright 2020 The ngspice team
+3 - Clause BSD license
+(see COPYING or https://opensource.org/licenses/BSD-3-Clause)
+Author: Jim Monte
 ----------------------------------------------------------------- */
 #include <ctype.h>
 #include <stdarg.h>

src/xspice/icm/dlmain.c

@@ -1,13 +1,13 @@
-//////////////////////////////////////////////////////////////////////////////
-// Build cmextrn.h, cminfo.h, udnextrn.h and udninfo.h from udnpath.lst and
-// modpath.lst using 'cmpp -lst'. Then compile this file and link it with
-// cm and udn object files to produce a dll that can be loaded by ngspice
-// at run-time.
-// Copyright 2000 The ngspice team
-// 3 - Clause BSD license
-// (see COPYING or https://opensource.org/licenses/BSD-3-Clause)
-// Author: Arpad Buermen
-////////////////////////////////////////////////////////////////////////////// 
+/* ----------------------------------------------------------------------
+ Build cmextrn.h, cminfo.h, udnextrn.h and udninfo.h from udnpath.lst and
+ modpath.lst using 'cmpp -lst'. Then compile this file and link it with
+ cm and udn object files to produce a dll that can be loaded by ngspice
+ at run-time.
+ Copyright 2000 The ngspice team
+ 3 - Clause BSD license
+ (see COPYING or https://opensource.org/licenses/BSD-3-Clause)
+ Author: Arpad Buermen
+------------------------------------------------------------------------ */
 
 #include  <stdarg.h>
 #include  <stdlib.h>