... at��http://www.mirandabanda.org/files/Cog/VM/VM.r3083

CogVM source as per VMMaker.oscog-eem.886/r3083

Fix regression in V3 become youngReferrers management in VMMaker.oscog-eem.882.

We /must/ prune young referrers if mapObjectReferencesInMachineCodeForBecome

removes a cog method from youngReferrers because it may get added back and

youngReferrers cannot contain duplicates.

Spur:

Fix bug in sweepToFollowForwardersForPigCompact which failed to update and

answer lowest forwarder.�� Fixes numForwarders == 0 assert failures.

Fix bug with become and class table not removing

classes which become causes them to be unhashed.

Fix bogus assert fail in synchronousSignal:. Refactor following code into

ensureSemaphoreForwardedThroughContext: and fix the assert there-in.

Use rawOverflowSlotsOf: in bytesInObject:.

Make a little more progress on Spur image segment support.�� Provide a

classTableEntriesDo: and use it to compute an arrayOfUnmarkedClasses.

Cogit:

Make sure voidImplicitReceiverCacheAt: sets codeModified if IRCs are inline.

Make sure freeMethod: clears cmRefersToYoung

Fix assert in cogitPostGCAction: that would fire erroneously in Spur become.

Move evaluation of Cogit primitive desacriptor enabled function from

initialization to just-in-time, and add enablers on SmallInteger primitives

to ensure they are applied only to SmallInteger receivers (falling back to

interpreter prims if not).�� Hence fix Cog for 4.1 (e.g. MuO) images.

Back out of saneMethodClassAssociation assert in

initialPCForHeader:method:.�� Newspeak falls foul of this.

Make sure that the method is set on returning from a callback.

Fixes MNUs of atAddress: in exampleCqsort in the stack VMs.

Fix bugs in scripts and Windows manifests.

Eliot