#24 Enable filtering of Word 2000 <![if...]> from any document

[Chris Wilson]

If a page contains <![if...]> tags but is not
recognised by JTidy
as a Word 2000 document (e.g. yahoo.com home page at time
of writing), JTidy cannot be configured to remove them.
This
patch allows removal of such tags from any document when
Word 2000 filtering is enabled, even if JTidy does not
detect
the document as a Word 2000 document.

The attached patch also adds a --word2000 command-line
option
to enable Word2000 filtering mode, useful for testing
and debugging
JTidy.

Thanks for some great software! Please keep up the good
work!

[Chris Wilson]

Patch to allow filtering Word 2000 <![if...]> tags from any document, and add a command-line option to enable this mode