zoneinfo2lua.pl to generate shorter copyright messages

Change zoneinfo2lua.pl to generate the short copyright messages
that have been there since https://github.com/openwrt/luci/commit/7a3493b1f7d75a3945279115324cf2ff4da26b7b

Also change the advice on line 3 about directory, where this script
should be run.

Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>

diff --git a/build/zoneinfo2lua.pl b/build/zoneinfo2lua.pl
index 4a90dae..d3f0403 100755 (executable)
--- a/build/zoneinfo2lua.pl
+++ b/build/zoneinfo2lua.pl
@@ -1,6 +1,6 @@
 #!/usr/bin/perl
 # zoneinfo2lua.pl - Make Lua module from /usr/share/zoneinfo
-# Execute from within /usr/share/zoneinfo
+# Execute from within root of Luci feed, usually feeds/luci
 # $Id$
 
 use strict;
@@ -51,16 +51,7 @@ open(O, "> $tzdout/tzdata.lua") || die "open($tzdout/tzdata.lua): $!\n";
 
 print STDERR "Writing time zones to $tzdout/tzdata.lua ... ";
 print O <<HEAD;
---[[
-LuCI - Autogenerated Zoneinfo Module
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-]]--
+-- Licensed to the public under the Apache License 2.0.
 
 module "luci.sys.zoneinfo.tzdata"
 
@@ -81,16 +72,7 @@ open (O, "> $tzdout/tzoffset.lua") || die "open($tzdout/tzoffset.lua): $!\n";
 
 print STDERR "Writing time offsets to $tzdout/tzoffset.lua ... ";
 print O <<HEAD;
---[[
-LuCI - Autogenerated Zoneinfo Module
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-]]--
+-- Licensed to the public under the Apache License 2.0.
 
 module "luci.sys.zoneinfo.tzoffset"