add comment and NPL.

intl/uconv/src/unixcharset.properties

@@ -1,7 +1,47 @@
+##
+## The contents of this file are subject to the Netscape Public License
+## Version 1.0 (the "NPL"); you may not use this file except in
+## compliance with the NPL.  You may obtain a copy of the NPL at
+## http://www.mozilla.org/NPL/
+##
+## Software distributed under the NPL is distributed on an "AS IS" basis,
+## WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+## for the specific language governing rights and limitations under the
+## NPL.
+##
+## The Initial Developer of this code under the NPL is Netscape
+## Communications Corporation.  Portions created by Netscape are
+## Copyright (C) 1999 Netscape Communications Corporation.  All Rights
+## Reserved.
+##
+##
+## Platform specific section.
+##   Map a given locale name in a particular platform (OS) to a charset name
+##   This have highgher priority than the all section
+##   Use this section to overwrite those locale name which *CONFLICT WITH*
+##   most other platform
+##   Do not use this section if the locale is unique in the platform. Only use
+##   this when it have CONFLICT w/ other platform.
+##
+## Example, most platform use EUC-JP in "japanese" locale, but 
+##   hpux, unixware, and sco use Shift_JIS, so we put
+##      locale.all.japanese=EUC-JP
+##   in the all platform section and put
+##      locale.hpux.japanese=Shift_JIS
+##      locale.unixware.japanese=Shift_JIS
+##      locale.sco.japanese=Shift_JIS
+##   in the platform specific section
+## 
 locale.hpux.japanese=Shift_JIS
 locale.unixware.japanese=Shift_JIS
 locale.sco.japanese=Shift_JIS
-
+##
+## All platform section
+##   Put the general locale to charset mapping here. 
+##   If somehow two platform use the same locale name with different 
+##   charset, put the least common one in the platform specific section
+##   This section have lower priority than the platform specific section
+##
 locale.all.C=ISO-8859-1
 locale.all.En_JP.IBM-932=Shift_JIS
 locale.all.En_JP=Shift_JIS