Ignore the last commit message. It was just a merge. Git confused me.

CogVM source as per VMMaker.oscog-eem.2420

Spur:
Extend semantics of primitives 165 & 166 (integerAt:[put:], signed indexing of
32-bit word classes) to byte, short and double word classes; actually, all
classes; this is a signedversion of 60 & 61 basicAt:[put:].

Refactor CogObjectRepresentationFor32|64BitSpur genPrimitiveAt[Put] into
genPrimitiveAt[Put]Signed:.

Extend Ronie's support for sign extension to all processors, generating the
simple move,signed shift sequence on processors without native sign extension
(i.e. ARM).

Added stats for Marking time and sweep time in full GC. Make them available
as vm parameters 72 and 73.

Now we have:
fullGCTime = markingTime + scavengeTime + compactionTime
With all but scavenge time available, but can be computed in-image from the
3 others.

We note that compactionTime includes sweepTime for convenience.
Depending on the compactor used, we have:
Planning -> sweepTime = 0.
Sweeper -> sweepTime = compactionTime.
Selective -> selectiveCompactionTime = compactionTime - sweepTime

Slang:
Extend constant elimination/analysis for generate[Signed]BitShift:on:indent:
so that isSignedInteger:inRangeForBits: generates a simple one-way shift for
integer signedBitShift: 1 - nBits when inlined and nBits is a constant
(see primitiveSpurIntegerAtPut).

Simulator:
Nuke some obsolete primitive experiments.

.gitignore

@@ -91,6 +91,7 @@ platforms/unix/config/autom4te.cache/
 # /image/
 /image/*.sum
 /image/*.tgz
+/image/*.st
 /image/coglinux*
 /image/cogwin
 /image/Cog.app

nsspur64src/vm/cogit.h

@@ -1,5 +1,5 @@
 /* Automatically generated by
-	CCodeGenerator VMMaker.oscog-eem.2401 uuid: 29232e0e-c9e3-41d8-ae75-519db862e02c
+	CCodeGenerator VMMaker.oscog-eem.2420 uuid: f303796f-283f-4d4c-a910-bf205a0b4600
  */
 
 

nsspur64src/vm/cointerp.h

@@ -1,5 +1,5 @@
 /* Automatically generated by
-	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.2401 uuid: 29232e0e-c9e3-41d8-ae75-519db862e02c
+	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.2420 uuid: f303796f-283f-4d4c-a910-bf205a0b4600
  */