[3752] Moved copyrights to Tomek's style

src/lib/dhcpsrv/logging_info.cc

@@ -1,4 +1,4 @@
-// Copyright (C) 2014, 2015 Internet Systems Consortium, Inc. ("ISC")
+// Copyright (C) 2014-2015 Internet Systems Consortium, Inc. ("ISC")
 //
 // Permission to use, copy, modify, and/or distribute this software for any
 // purpose with or without fee is hereby granted, provided that the above

src/lib/dhcpsrv/logging_info.h

@@ -1,4 +1,4 @@
-// Copyright (C) 2014, 2015 Internet Systems Consortium, Inc. ("ISC")
+// Copyright (C) 2014-2015 Internet Systems Consortium, Inc. ("ISC")
 //
 // Permission to use, copy, modify, and/or distribute this software for any
 // purpose with or without fee is hereby granted, provided that the above

src/lib/dhcpsrv/tests/logging_unittest.cc

@@ -1,4 +1,4 @@
-// Copyright (C) 2014, 2015 Internet Systems Consortium, Inc. ("ISC")
+// Copyright (C) 2014-2015 Internet Systems Consortium, Inc. ("ISC")
 //
 // Permission to use, copy, modify, and/or distribute this software for any
 // purpose with or without fee is hereby granted, provided that the above