Create an array containing files matching a file spec
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 Syntax

        GT_GetFiles( cDrive , cPath , cFileSpec )

 Arguments:

      cDrive    - Drive to use
      cPath     - Path to use
      cFileSpec - File spec to find

 Returns:

      A sorted array of file names

 Description:

      Finds all files in the given path and returns them in a sorted array

 Examples:



 Header File: GT_LIB.CH

 Source: GETFILES.PRG

 Author:  Martin Colloby