syscmd/esyscmd fail on windows with m4 1.4.13

[Henrique Martins]

Sent the message below to the gnuwin32-users list but got no
response in about a week or so.  Trying here...

-- Henrique

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I have an m4 file where I call esyscmd to get the host name on a
windows xp system.  This used to work on 1.4.9 but fails on 1.4.13.
Just tested it and both
  syscmd(hostname)
  esyscmd(hostname)
work with 1.4.9, but error out with "no such file or directory"
with 1.4.13.  Hostname.exe is in c:\windows\system32 but trying
hostname.exe or giving the full path with forward or backward
slashes, etc, still errors out.