Jilles Tjoelker 640b70e414 sh: Send the "xyz: not found" message to redirected fd 2.
This also fixes that trying to execute a non-regular file with a command
name without '/' returns 127 instead of 126.
The fix is rather simplistic: treat CMDUNKNOWN as if the command were found
as an external program. The resulting fork is a bit wasteful but executing
unknown commands should not be very frequent.

PR:		bin/137659
2009-10-06 22:00:14 +00:00
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