Patch to fix minor bug and a little clean-up in ikarus.io.ss

[hyln9]

Made tcp-server-socket and tcp-server-socket-nonblocking do:

• Check validity of port number range, otherwise it gets cast by C code and used incorrectly.
• Use tcp-server-socket/who for better error who reporting.
• Use io-error instead of die for ikrt_listen error return.

Fix bug in close-tcp-server-socket where the tcp-server's fd field was not being set to #F. And use io-error instead of die.

Replaced calls to error with calls to die, where appropriate.

Launchpad Details: #LP313852 Derick Eddington - 2009-01-04 16:57:07 -0500

[hyln9]

The previous patch had a typo. This new one fixes it.

Launchpad Details: #LPC Derick Eddington - 2009-01-04 22:34:34 -0500