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Minor optimisation to the heap manager for performance enhancement.
Stewart Brodie authored 
Detail:
  When splitting a free block in order to satisfy an allocation request,
    don't split if the remaining free space falls below a specified
    threshold (<= 8 bytes) to avoid creating lots of tiny free blocks,
    but instead gift the extra 8 bytes to the newly allocated block.
    This should stop the worst case heap fragmentation seen with OS_Heap
    heaps (particular the Toolbox's dynamic area).
Admin:
  Tested in Ursula desktop build.


Version 5.44. Tagged as 'Kernel-5_44'
79db54e0
Name Last commit Last update
..
AMBControl 32-bit Kernel.
PMF Previous version did not work.
vdu Fixed an EXITS that should be an EXIT.
ARM600 Fix to bugzilla bug 4065
Arthur2 32-bit Kernel.
Arthur3 Improved the error cacheing.
ArthurSWIs Added new debug flag DebugROMPostInit
ChangeDyn Imported OS_Memory 12 from Ursula.
Convrsions 32-bit Kernel.
Copro15ops * Run-time emulator detection added (no need for separate images). Needs an
ExtraSWIs Import from cleaned 360 CD
FlashROM 32-bit Kernel.
GetAll Imported OS_Memory 12 from Ursula.
HeapMan Minor optimisation to the heap manager for performance enhancement.
HeapSort 32-bit Kernel.
KbdResA1 32-bit Kernel.
KbdResPC 32-bit Kernel.
KbdResRCMM And IRQs tweaked one more time.
Kernel OS_CallASWI and OS_CallASWIR12 sped up by 4-6 cycles (depending on which ARM).
MEMC1 Import from cleaned 360 CD
MEMC2 Import from cleaned 360 CD
MOSDict Import from cleaned 360 CD
MemInfo Imported OS_Memory 12 from Ursula.
Middle Added a couple of new sub-reason codes to OS_ReadSysInfo 6;
ModHand 32-bit kernels will refuse to initialise non 32-bit modules.
MoreComms
MoreSWIs
Morris
MsgCode
NewIRQs
NewReset
Oscli
SWINaming
Super1
SysComms
TickEvents
UnSqueeze
Utility