[PATCH 0/1] MR3154: cmd: Fix 'if exist' with a directory/ as a parameter.

[Maarten DB (＠maarten)]

'if exists' takes a parameter which can be directory, directory/,
directory/. directory\ or directory. for example, and should equate
to true if the directory exists. The syntax directory\ is explicitly
rejected by FindFirstFile and hence was not working - look for this
specific case, and if found append a '.'.

Follow-up commit of bc9d68bcbee5c9d4f4582f766a4f552870385361

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=55130