XML entities in path

[abelcheung]

In XML output mode, character inside paths need to be escaped as entities, but this is not done right now:

character	entity
&	&
"	"
'	'
<	&lt;
>	&gt;

For reference, Microsoft doc mentions file names with these characters are not allowed:

• <>:"\/|?*
• [\x0-\x1F]

On the other hand NTFS layer seems to be very liberal and has no disallowed character value except \x0.

[abelcheung]

As paths would be wrapped inside CDATA section (see issue #14 ), xml entities inside paths need not be converted anymore.