[5/5] cmd: WCMD_delete_one: avoid commandline processing when recursing; fixes bug 26885

[Dan Kegel]

This is the non-ugly fix Alexandre was asking for in
http://www.winehq.org/pipermail/wine-devel/2011-April/089817.html

Includes new test case which would have crashed before this fix.
---
 programs/cmd/builtins.c                  |    4 ++--
 programs/cmd/tests/test_builtins.cmd     |   20 ++++++++++++++++++++
 programs/cmd/tests/test_builtins.cmd.exp |    1 +
 3 files changed, 23 insertions(+), 2 deletions(-)
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