Interpreter change

Please integrate immediately, unless the same change already reached the Squeak VMM by way of the Croquet VMM.

'From Croquet1.0beta of 11 April 2006 [latest update: #0] on 17 April 2006 at 10:29:39 am'! "Change Set: Socket-latencyFix-ikp Date: 14 April 2006 Author: Ian Piumarta

Reset nextPollTick to zero in forceInterruptCheck so that asynchronous external i/o can obtain an immediate ioProcessEvents."!

!Interpreter methodsFor: 'processes' stamp: 'ikp 4/14/2006 16:30'! forceInterruptCheck "force an interrupt check ASAP" interruptCheckCounter := -1000. nextPollTick := 0! !