Inserted an $Info stream in $UpCase to comply with Windows 8

Inserted an $Info stream in $UpCase to comply with Windows 8

Since Windows 8 a new stream is added to the upper case file to record
a CRC of the upper case data. This way, if the file does not match the
one defined on the current Windows system, chkdsk can tell whether the
file is damaged or just out of date, and an error is only displayed if
the file is damaged.

The $Info data has been checked to be ignored by Windows XP, Windows
Vista and Windows 7. If not present, chkdsk for Windows 8 complains about
a wrong upper case file.