A couple of additional character classes from Jeffrey,

A couple of additional character classes from Jeffrey,
hopefully useful in future for internal use for implementing
some special cases of casing.

Also regenerate once more all the character classes,
now without the timestamp.  A timestamp would be kind of
nice but it's not: having a timestamp in a file means that
even if the effective contents of file really didn't
change, the file looks as if it changed.

p4raw-id: //depot/perl@14274