Fix W32APIMapperTest failing on non-CP1252 encodings
Fix W32APIMapperTest failing on non-CP1252 encodings

The choosen character \u0444 (CYRILLIC SMALL LETTER EF) is not present
in all CP* charsets. This change switches to \u203a 
'SINGLE RIGHT-POINTING ANGLE QUOTATION MARK': ›, which was found to
be present in CP1250-CP1258.

Closes: #779
trejkaz/jna,trejkaz/jna,trejkaz/jna,trejkaz/jna,trejkaz/jna,trejkaz/jna