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The pointer comparison checking required when running in a system with > 64M memory was tightened up from Wimp-4_75 to Wimp-4_76, but to allow the module to target pre RISC OS 5 systems an option to relax those checks is required.
Each check has been revisited and where appropriate demarked with a "AcceptLoosePointer" macro, which just remaps the pointer into the stricter form and carries on. In the strict checking case, the macro reduces to nothing.

Detail:
Add AcceptLoosePointers switch.
Retire singular use of StrongARM switch (calling XOS_SynchroniseCodeAreas is harmless pre StrongARM anyway).
Rename Ursula_RPC options to RO400.
Put duplicate documentation in the attic.
Allow -2 or -1 as the iconbar handle in Wimp_ResizeIcon (ticket #203).
Tighten up the list terminator check in the DebugMemory switch of Memory.s

Tested on RISC OS 3.10 (emulated), 3.50, 3.60, 3.70, 4.02.

Version 5.24. Tagged as 'Wimp-5_24'