VMMaker.oscog-eem.965:Fix in-image PC mapping testing.Add Spur64BitCoMemoryManager.Nuke the now obsolete withoutForwardingOn:and:sendToCogit:

VMMaker.oscog-eem.964:Make the return type of safeObjectAfter: stable andconsistent with that of objectAfter:

VMMaker.oscog-eem.963:Fix SmartSyntaxPlugin code generation for Spur of- asOop: old code assumed 4 byte oops & headers- Unsigned old code assumed 32-bit oopsFix Float class>>ccgCanConvertFrom: to use isFloatAvoid duplication of effort in special selector sendforwarding fault handling.
not using primitive 220 modified methods at all (so we can be sure we have the same code of Eliot... and we are not using 220 anyway)