vlt.file.fullfilename

  FULLFILENAME - return the full path file name of a file

  FULLNAME = vlt.file.fullfilename(FILENAME, [USEWHICH])

  Given either a full file name (with path) or just a filename
  (without path), returns the full path filename FULLNAME.

  If FILENAME does not exist in the present working directory,
  but is on the Matlab path, it is located using WHICH, unless
  the user passes USEWHICH=0.

  See also: FILEPARTS, WHICH

  Example:
    vlt.file.fullfilename('myfile.txt')  % returns [pwd filesep 'myfile.txt']
    vlt.file.fullfilename('/Users/me/myfile.txt') % returns ['/Users/me/myfile.txt']