[PATCH 6/7] CMD: Current directory needs saving in the environment even for cmd /c

[Jason Edmeades]

The current directory locations (=C: environment variable for example)
are used by endlocal and hence need to be available should a command
script launched with /c need to issue endlocal. Similarly, endlocal
is implied at the end of a script

Note: The changes to open stderr are due to an odd bug whereby stdout
was getting corrupted after the cmd.exe /c test - without this called
programs fail to inherit stdout!

Fixes bug 22715
---
 programs/cmd/batch.c                     |    7 ++++
 programs/cmd/builtins.c                  |    3 +-
 programs/cmd/tests/batch.c               |   15 ++++++++--
 programs/cmd/tests/test_builtins.cmd     |   46 ++++++++++++++++++++++++++++++
 programs/cmd/tests/test_builtins.cmd.exp |   16 ++++++++++
 programs/cmd/wcmd.h                      |    1 +
 programs/cmd/wcmdmain.c                  |   18 ++++++------
 7 files changed, 93 insertions(+), 13 deletions(-)

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