[Ecls-list] Latest changes

[Juan Jose Garcia-Ripoll]

commit a9548b451040925c3dd404c458154c5f0fadb350
Author: Juan Jose Garcia Ripoll <jjgarcia at jjgr-2.local>
Date:   Wed Sep 9 09:33:48 2009 +0200

    config.h.in: autoconf screws an explicit #undef ECL_SIGNED_ZERO
that is intended to be used as such.

commit bb15e28d00b2c1518bad9fd9ae96382a098c5315
Author: Juan Jose Garcia Ripoll <jjgarcia at jjgr-2.local>
Date:   Tue Sep 8 15:32:30 2009 +0200

    Create threads in a joinable state (Unix pthread) and let it
detach itself before exiting.

commit 83d8c5e3d5508a8709d2c372236c58080621a0d5
Author: Juan Jose Garcia Ripoll <jjgarcia at jjgr-2.local>
Date:   Tue Sep 8 14:46:42 2009 +0200

    The function mp_process_join() now also works with Windows.

commit ffbb1b45adc0c3f6a431cac53072633535791dd5
Author: Juan Jose Garcia Ripoll <jjgarcia at jjgr-2.local>
Date:   Tue Sep 8 14:32:49 2009 +0200

    New function MP:PROCESS-JOIN, waits for a thread to terminate (J.C.Beaudoin)