Revert "remove duplicate charset entries"

This reverts commit 98973e40e8753e96c7ae271a2a13078646fadb1b.

Not actually duplicates, the entries have underscore instead
of dash.
diff --git a/tools/source/inet/inetmime.cxx b/tools/source/inet/inetmime.cxx
index d454362..27cb185 100644
--- a/tools/source/inet/inetmime.cxx
+++ b/tools/source/inet/inetmime.cxx
@@ -921,6 +921,7 @@ static EncodingEntry const aEncodingMap[]
        { "ISO-8859-1", RTL_TEXTENCODING_ISO_8859_1 },
        { "ISO_8859-1:1987", RTL_TEXTENCODING_ISO_8859_1 },
        { "ISO-IR-100", RTL_TEXTENCODING_ISO_8859_1 },
        { "ISO_8859-1", RTL_TEXTENCODING_ISO_8859_1 },
        { "LATIN1", RTL_TEXTENCODING_ISO_8859_1 },
        { "L1", RTL_TEXTENCODING_ISO_8859_1 },
        { "IBM819", RTL_TEXTENCODING_ISO_8859_1 },
@@ -929,29 +930,34 @@ static EncodingEntry const aEncodingMap[]
        { "ISO-8859-2", RTL_TEXTENCODING_ISO_8859_2 },
        { "ISO_8859-2:1987", RTL_TEXTENCODING_ISO_8859_2 },
        { "ISO-IR-101", RTL_TEXTENCODING_ISO_8859_2 },
        { "ISO_8859-2", RTL_TEXTENCODING_ISO_8859_2 },
        { "LATIN2", RTL_TEXTENCODING_ISO_8859_2 },
        { "L2", RTL_TEXTENCODING_ISO_8859_2 },
        { "CSISOLATIN2", RTL_TEXTENCODING_ISO_8859_2 },
        { "ISO-8859-3", RTL_TEXTENCODING_ISO_8859_3 },
        { "ISO_8859-3:1988", RTL_TEXTENCODING_ISO_8859_3 },
        { "ISO-IR-109", RTL_TEXTENCODING_ISO_8859_3 },
        { "ISO_8859-3", RTL_TEXTENCODING_ISO_8859_3 },
        { "LATIN3", RTL_TEXTENCODING_ISO_8859_3 },
        { "L3", RTL_TEXTENCODING_ISO_8859_3 },
        { "CSISOLATIN3", RTL_TEXTENCODING_ISO_8859_3 },
        { "ISO-8859-4", RTL_TEXTENCODING_ISO_8859_4 },
        { "ISO_8859-4:1988", RTL_TEXTENCODING_ISO_8859_4 },
        { "ISO-IR-110", RTL_TEXTENCODING_ISO_8859_4 },
        { "ISO_8859-4", RTL_TEXTENCODING_ISO_8859_4 },
        { "LATIN4", RTL_TEXTENCODING_ISO_8859_4 },
        { "L4", RTL_TEXTENCODING_ISO_8859_4 },
        { "CSISOLATIN4", RTL_TEXTENCODING_ISO_8859_4 },
        { "ISO-8859-5", RTL_TEXTENCODING_ISO_8859_5 },
        { "ISO_8859-5:1988", RTL_TEXTENCODING_ISO_8859_5 },
        { "ISO-IR-144", RTL_TEXTENCODING_ISO_8859_5 },
        { "ISO_8859-5", RTL_TEXTENCODING_ISO_8859_5 },
        { "CYRILLIC", RTL_TEXTENCODING_ISO_8859_5 },
        { "CSISOLATINCYRILLIC", RTL_TEXTENCODING_ISO_8859_5 },
        { "ISO-8859-6", RTL_TEXTENCODING_ISO_8859_6 },
        { "ISO_8859-6:1987", RTL_TEXTENCODING_ISO_8859_6 },
        { "ISO-IR-127", RTL_TEXTENCODING_ISO_8859_6 },
        { "ISO_8859-6", RTL_TEXTENCODING_ISO_8859_6 },
        { "ECMA-114", RTL_TEXTENCODING_ISO_8859_6 },
        { "ASMO-708", RTL_TEXTENCODING_ISO_8859_6 },
        { "ARABIC", RTL_TEXTENCODING_ISO_8859_6 },
@@ -959,6 +965,7 @@ static EncodingEntry const aEncodingMap[]
        { "ISO-8859-7", RTL_TEXTENCODING_ISO_8859_7 },
        { "ISO_8859-7:1987", RTL_TEXTENCODING_ISO_8859_7 },
        { "ISO-IR-126", RTL_TEXTENCODING_ISO_8859_7 },
        { "ISO_8859-7", RTL_TEXTENCODING_ISO_8859_7 },
        { "ELOT_928", RTL_TEXTENCODING_ISO_8859_7 },
        { "ECMA-118", RTL_TEXTENCODING_ISO_8859_7 },
        { "GREEK", RTL_TEXTENCODING_ISO_8859_7 },
@@ -967,15 +974,18 @@ static EncodingEntry const aEncodingMap[]
        { "ISO-8859-8", RTL_TEXTENCODING_ISO_8859_8 },
        { "ISO_8859-8:1988", RTL_TEXTENCODING_ISO_8859_8 },
        { "ISO-IR-138", RTL_TEXTENCODING_ISO_8859_8 },
        { "ISO_8859-8", RTL_TEXTENCODING_ISO_8859_8 },
        { "HEBREW", RTL_TEXTENCODING_ISO_8859_8 },
        { "CSISOLATINHEBREW", RTL_TEXTENCODING_ISO_8859_8 },
        { "ISO-8859-9", RTL_TEXTENCODING_ISO_8859_9 },
        { "ISO_8859-9:1989", RTL_TEXTENCODING_ISO_8859_9 },
        { "ISO-IR-148", RTL_TEXTENCODING_ISO_8859_9 },
        { "ISO_8859-9", RTL_TEXTENCODING_ISO_8859_9 },
        { "LATIN5", RTL_TEXTENCODING_ISO_8859_9 },
        { "L5", RTL_TEXTENCODING_ISO_8859_9 },
        { "CSISOLATIN5", RTL_TEXTENCODING_ISO_8859_9 },
        { "ISO-8859-14", RTL_TEXTENCODING_ISO_8859_14 }, // RFC 2047
        { "ISO_8859-15", RTL_TEXTENCODING_ISO_8859_15 },
        { "ISO-8859-15", RTL_TEXTENCODING_ISO_8859_15 }, // RFC 2047
        { "MACINTOSH", RTL_TEXTENCODING_APPLE_ROMAN },
        { "MAC", RTL_TEXTENCODING_APPLE_ROMAN },