This code is iconv compatible interface routine for mod_encoding. taisuke yamada writes sample code for hooking iconv() for mod_encoding.

in mod_encoding configuration directive, supports following encoding names additionally:

mssjis
- this is almost same as sjis, but is a microsoft variant of it.
ja-auto-sjis-ms
- this is a special converter which does autodetection between
utf-8/jis/mssjis/sjis/euc-jp. this itself does not do conversion.