DEVEL15-DELTA15-windows-handle-invalid-utf16-names-20081019

DEVEL15-DELTA15-windows-handle-invalid-utf16-names-20081019

LICENSE MIT
FIXES 116641

Windows will deliver to OpenAFS UTF16 strings that are not valid Unicode
and cannot be converted to UTF8.  Return bad file name errors in those
cases.

Make sure all file server strings once converted to UTF16 can be converted
back.  If not, escape the invalid portions of the string so that the
file can be accessed.