CogVM source as per VMMaker.oscog-eem.787/r3021

Fix mixup of old & young spaces in primitiveVMParameter, and

comment some new parameters.

Fix return types for positive[64/32]BitValueOf:.

positive32BitValueOf: must answer a usqInt,

positive64BitValueOf: must answer a usqLong.

Use positiveMachineIntegerValueOf: to decode arg in primitiveNewWithArg

and ensure positiveMachineIntegerValueOf: is inlined there-in.

win32:

Set the IMAGE_FILE_LARGE_ADDRESS_AWARE flag in the image header of the Windows

executables to allow e.g. Spur to allocate more than 2Gb.

Spur:

Fix sign and overflow issues in instantiating larger objects

and determining the size of large instances.

Fix some freeChunk accesses that used fetchPointer:ofObject:.

Cog ARM:

Fix prim return for compileInterpreterPrimitive: on RISCs. ��On return from

interpreter prim, ret pc is in instructionPointer and must return to whence

it came, which is the stack on CISC and the LinkReg on RISC. ��Hence restoring

the receiver reg requires different offsets in the two cases.

Rework the rotatable quick constant logic a little and clean up users.

Fix concretizeMoveRXbrR to do byte not word loads.

Fix concretizeConditionalJumpLong: to actually be conditional. Oops.

Correct mistaken callersaved reg stuff for ARM

Fix concretizedRetN to not over-bump the SP

The method abort trampolines shouldn't pop anything, especially

now we have the pushLinkreg: arg to manage the LinkReg more easily.

Slang:

Rip out the UseRightShiftForDivide optimization. ��It gets unsigned division

wrong, and C compilers can and will optimize this correctly themselves.

Eliot