[PATCH 4/9] CMD: cmd /c cannot use argv/argc to walk the arguments RESEND

[Jason Edmeades]

When cmd.exe is launched with /c, it walks the args through argv -
unfortunately these have already had quotes removed. The only way to
get the command line unadulterated is to use GetCommandLine and parse
it ourselves.

Changing to this removes a lot of code, and makes the /c logic
really simple now.

Fixes bugs 20161, 21131
---
 programs/cmd/tests/test_builtins.cmd     |    7 +-
 programs/cmd/tests/test_builtins.cmd.exp |    3 +
 programs/cmd/wcmdmain.c                  |  183 +++++++++---------------------
 3 files changed, 62 insertions(+), 131 deletions(-)

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