[Scsh-checkins] scsh-0.6/scsh dot-locking.scm

[Mike Sperber <sperber@users.sourceforge.net>]

Update of /cvsroot/scsh/scsh-0.6/scsh
In directory usw-pr-cvs1:/tmp/cvs-serv20518

Modified Files:
        dot-locking.scm 
Log Message:
Made arguments to OBTAIN-DOT-LOCK optional and supply sensible
defaults.
All timings are now in seconds.
Add interface procedure BREAK-DOT-LOCK.
Indicate broken lock by BROKEN return value from OBTAIN-DOT-LOCK.