* several tests ALWAYS failed due to bad test programs
* the IoctlSocket() test now is linked on test as it could otherwise compile
fine on many systems that doesn't support it
* added a test for the BeOS way of doing non-blocking sockets (based on a
patch from Shard)
Forgot one case. On HP-UX 11.00, gethostbyname_r() is properly defined
if -D_REENTRANT is used. Without it, the compiler still accepts the
function prototype but gives a warning about hostent_data going out of
scope. This is because struct hostent_data is not declared. So, we
force an error by trying to set a variable to the struct.
