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Problem: SOUNDEX returned an invalid string for international characters in multi-byte character sets. For example: for a Chinese/Japanese 3-byte long character _utf8 0xE99885 it took only the very first byte 0xE9, put it into the outout string and then appended with three DIGIT ZERO characters, so the result was 0xE9303030 - which is an invalide utf8 string. Fix: make SOUNDEX() multi-byte aware and - put only complete characters into result, thus return only valid strings. This patch also makes SOUNDEX() compatible with UCS2. mysql-test/r/ctype_ucs.result: Adding tests mysql-test/r/ctype_utf8.result: Adding tests mysql-test/t/ctype_ucs.test: Adding tests mysql-test/t/ctype_utf8.test: Adding tests sql/item_strfunc.cc: Making soundex multi-byte aware.
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