[Mono-list] class libraries

[Sean MacIsaac]

i moved a lot of things around, and changed the build system from a make
based to a nant based system.  i tried to be careful, but i may have
stepped on someones recent modifications.  things build fine for me (you
must now do `make linux` from the /mcs dir to get libs for linux).  also
the output for the class libraries is in /mcs/class/lib/*.dll.  feel
free to write if you have questions or to yell at me for destroying
everything ;)

btw my hello world still runs in mint on linux after these changes.

sean