prefix better
- Enhance the set support to unset, display value error correctly
- Enhance the command line support for parms, and env var expansion
- Enhance the echo command to not loose whitespace, and display
  output with % signs better

case for backtracing from a null EIP.

assembly code a bit, and wrapped it in #ifdef __i386__.

MZ_KillModule() to MZ_KillTask().

initialize DOS memory properly in the new process model. Made
DOSMEM_MemoryBase() use MZ_Current()->img instead of pModule->dos_image.

Check for correct struct magic before reading out of it.

of pointers from global heap functions.

loop. Cleaned up event dispatching code a bit.

reading directly from the console driver.

shell32 now requires linking with kernel32 and shlwapi

positions and the VGA routines, instead of directly accessing the
console driver.

FindResourceA/W should search for any language resource.

-desktop mode.