Update for the MASM32 text broswer.

[hutch--]

I did a few tweaks on the text browser, mainly to fix the aspect ratio so it did not start too wide on a wide screen. A couple of tweaks to simplify the internal parsing but nothing you would lose sleep over. It could do with a modernisation of its interface but I have not got time at the moment.

Installation is easy, just plonk it into the masm32 directory overwriting the old version.