v1.28

   - DEBUGX bugfix e-cmd: used wrong offset when reading from 32-bit 
     segments.
   - DEBUGX bugfix d-cmd: hiword(ecx) wasn't cleared, resulting in a
     "default" length for 32-bit segment dump > 128.
   - DEBUGX bugfix g/t/p-cmd: if debuggee is stopped in protected-mode,
     saved stack at debugger's PSP:[2Eh] must not be "adjusted".
   - added debug displays (created if _DEBUG is defined)
   - DEBUGX: int 2Fh, ax=1686h to detect mode no longer used - this makes 
     interrupt 2Fh traceable.
   - 'e' cmd: don't stop input after byte '0d' has been entered

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