Update license headers for plugins and includes.

plugins/tfc/tfcstats.sma

@@ -1,9 +1,18 @@
-/* Get Score for TFC STATS.
- *
- * (c) 2004, SidLuke
- * This file is provided as is (no warranties).
- *
- * Function calculates position in rank.
+// vim: set ts=4 sw=4 tw=99 noet:
+//
+// AMX Mod X, based on AMX Mod by Aleksander Naszko ("OLO").
+// Copyright (C) The AMX Mod X Development Team.
+// Copyright (C) 2004 SidLuke.
+//
+// This software is licensed under the GNU General Public License, version 3 or higher.
+// Additional exceptions apply. For full license details, see LICENSE.txt or visit:
+//     https://alliedmods.net/amxmodx-license
+
+//
+// TFC Stats Rank Calculation
+//
+
+/* Function calculates position in rank.
  *
  * Stats:
  * 0 - kills
@@ -22,4 +31,4 @@
 public get_score(stats[8],body[8])
 {
 	return stats[0] - stats[1] /* kills - deaths */
-}
+}