Allow 'wine foo.exe' to work when foo.exe is a symlink

[Dan Kegel]

Currently, when I install a Windows app on Ubuntu,
the apps don't show up in the system menus.
I'm doing a demo of Wine for a users' group in a few
days, so I thought "How would the average user deal with this?"
Probably they'd navigate down to the directory
where the app was installed, make a shortcut to the app,
and drag the shortcut to the desktop.  So I tried
that -- and it didn't work.  But it does work if I apply
the following trivial patch, which just uses readlink() to find the
target of the shortcut.    I didn't really analyze the
code, just slammed the readlink in there, and was happy to
see it worked.

Changelog:
  kernel/process.c:  if argv[1] is a symlink, use its target

 process.c |   14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)
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