new BMG pipeline code

[Michael Craig <mic@graphics.lcs.mit.edu>]

hi,

initial code for the new BMG pipeline is now up, at
http://city.lcs.mit.edu/bmg/, under "Miscellaneous Project Information."
acad2ug2 and dejunk2 are included --
though i have only tested them on MIT's floor plans so far, they
are fairly general and should work fine on any DXFs. the biggest piece,
walls2, is still under heavy development and is not yet included. we
cannot officially provide support right now, but if you have any thoughts,
send them my way.



michael