Long utf-8 characters

[Charlie Brej]

Passwords with long characters are failing because the multi-byte character 
functions rely on the locale. So I tried setting the locale but then that fails 
because libc wants to have /usr/lib mounted to read the locale info and that's 
difficult when typing the password to decrypt / . The file it wants is 80Mb so 
too large to have in the initrd.

The only way I can see of getting through this is to use our own utf-8 char and 
string length functions. Attached is a patch. Does this seem sane or is there a 
better way?
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