CogVM source as per VMMaker.oscog-eem.1873

Spur: Fix ephemerons (at least for Gule's test case).

The mournQueue is of course a root for the scavenger and so must be visited at
the start of a scavenge.  Fix bug in markAllUnscannedEphemerons, enumerating
correctly.

Both fireEphemeronsInRememberedSet and fireEphemeronsOnEphemeronList must check
for an ephemeron being fireable.  An as-yet-firable ephemeron might get added to
the ephemeron list and later its key may get tenured, rendering the ephemeron
unfirable in that cycle.

Fix marking of obj stack contents (markAndTraceObjStack:andContents:).  Again
tenuring could cause contents to be forwarded and hence read barrier is needed.

Fix asserts that check for ephemerons so that the change in an ephemeron's
format once it gets added to the mournQueue doesn't break the asserts;
isMaybeFiredEphemeron[Format]: answer true for ephemerons and ephemerons in
the mournQueue.

Make pushLiteralVariable: store unfollowed literals back into the literal frame.
Do so in a function off to the side, not inlined into the interpreter loop.

With these changes Guille's test case passes:
	| e |
	Smalltalk supportsQueueingFinalization: true.
	e := (1 to: 200000) collect:
		[:i| Ephemeron
				key: (ObjectFinalizer receiver: 'test', 'asd' selector: #logCr)
				value: Object new].
	Smalltalk garbageCollect!

Plugins:
Take a slightly more minimal approach to Esteban's FloatArray changes in
VMMaker.oscog-EstebanLorenzano.1869


git-svn-id: http://squeakvm.org/svn/squeak/branches/Cog@3732 fa1542d4-bde8-0310-ad64-8ed1123d492a

Former-commit-id: 44a69bc6a14208a3c14745135797ba8bab61a0a6

Author: eliotmiranda

nsspur64src/vm/cogit.h

@@ -1,5 +1,5 @@
 /* Automatically generated by
-	CCodeGenerator VMMaker.oscog-eem.1865 uuid: 2aa4b0e0-004d-4599-896a-084a749a2c47
+	CCodeGenerator VMMaker.oscog-eem.1872 uuid: 6db6d610-b1a5-4f4d-978d-22c917bdb3e4
  */
 
 

nsspur64src/vm/cointerp.c

@@ -1,5 +1,5 @@
 /* Automatically generated by
-	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.1865 uuid: 2aa4b0e0-004d-4599-896a-084a749a2c47
+	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.1872 uuid: 6db6d610-b1a5-4f4d-978d-22c917bdb3e4
  */
 
 

nsspur64src/vm/cointerp.h

@@ -1,5 +1,5 @@
 /* Automatically generated by
-	CCodeGenerator VMMaker.oscog-eem.1865 uuid: 2aa4b0e0-004d-4599-896a-084a749a2c47
+	CCodeGenerator VMMaker.oscog-eem.1872 uuid: 6db6d610-b1a5-4f4d-978d-22c917bdb3e4
  */
 
 

nsspur64src/vm/gcc3x-cointerp.c

@@ -1,5 +1,5 @@
 /* Automatically generated by
-	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.1865 uuid: 2aa4b0e0-004d-4599-896a-084a749a2c47
+	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.1872 uuid: 6db6d610-b1a5-4f4d-978d-22c917bdb3e4
  */