Beta 5:

* check clipboard sharing disabled state earlier, before any resource allocations
* clipboard sharing option added to misc panel
* fixed archive mounting crash if archive canīt be fully unpacked (for example dms without filesystem)
* autodetect byteswapped harddisk RDSK signature in blocks 0 to 15 (not just block 0)
* fixed 68020+ non-JIT/non-CE but compatible mode set causing random errors in some situations (b1)