Message1721

Have checked in some fixes at revision 3332.

1. Now support the fileno() method as well as the getchannel() method for retrieving the SelectableChannels.

2. Added a cpython compatible select function which puts in all sockets into non-blocking mode before selection, as required by jython/java, and then restores the blocking mode afterwards.

However, there are still some modifications required for telnetlib to work, namely changing the import of select so that it imports the cpython compatible select.

Therefore, I am leaving this bug open for now, until telnetlib is truly fixed.