NAME:
  reducprmt
 PURPOSE:
  Promote version of a reductor info file to highest version.
 DESCRIPTION:

 CATEGORY:
  File I/O
 CALLING SEQUENCE:
  reducprmt,infofile
 INPUTS:

  infofile - Reductor info file.

 OPTIONAL INPUT PARAMETERS:

 KEYWORD INPUT PARAMETERS:
  RDNOISE    -       This sets the value of the read noise parameter
                        on line 5 when promoting the file. Otherwise,
                        the user is prompted for the value.
  GUI-               Flag, if set use modal widget to prompt for rdnoise.
 OUTPUTS:

  The  info file is updated to the most recent version.  Not changed if already
    current.

   The following formats are supported:
   v1.0  Version line at the start:   REDUCTOR v1.0
         line 5 contains the photometry extraction parameters,
         Object radius, inner sky, outer sky, gain.  
   v1.1  Version line at the start:   REDUCTOR v1.1
         line 5 contains the photometry extraction parameters,
         Object radius, inner sky, outer sky, gain, readout noise.  

 KEYWORD OUTPUT PARAMETERS:

 COMMON BLOCKS:

 SIDE EFFECTS:

 RESTRICTIONS:

 PROCEDURE:

 MODIFICATION HISTORY:
  2006/06/22, Written by Peter L. Collins, Lowell Observatory
  2006/08/26, PLC, modified to prompt for rdnoise if it is
                   undefined, using qinput for this if /GUI.
  2006/08/28, PLC, modified for instrument defaults.
  2006/10/19, PLC, changed pccd rdnoise default to match reductor.