Remove the Cygwin warning about MS-DOS path

MS-DOS style path detected: C:\wcs\eclipse\pcm51_io_to_mb_app\code\appl
  Preferred POSIX equivalent is: /cygdrive/c/wcs/eclipse/pcm51_io_to_mb_app/code/appl
  CYGWIN environment variable option "nodosfilewarning" turns off this warning.
  Consult the user's guide for more details about POSIX paths:
    http://cygwin.com/cygwin-ug-net/using.html#using-pathnames


Run this command:
set CYGWIN=nodosfilewarning