Dump most of the old "unit" tests which were more system tests and only tested
a small amount of functionality against the host.
The new test suite is a lot more thorough and tests an arbitrary Windows version
over the network rather than testing within the host's WinSock environment.
More documentation detailing how to run this will follow.
The IPX/SPX protocol versions in 98/2000/XP only require the second socket to
have SO_REUSEADDR when attempting to bind to an already-used address. The state
of the option on the first socket is ignored.
The ADDR_TABLE_ENTRY_REUSE flag is kept and set on all sockets in the address
table to keep compatibility with previous versions.
