NAME:
  mysqldocscan
 PURPOSE:
  Scan a database and report discrepancies in the documentation table.
 DESCRIPTION:
  This routine uses a standard table named "doc" in a database and compares
  its entries with the tables and fields actually defined in the database.
  If inconsistencies are found, they are displayed on standard output.
 CATEGORY:
  Database
 CALLING SEQUENCE:
  mysqldocscan,dblun
 INPUTS:
  dblun - the logical unit of the pipe (opened by openmysql).
 OPTIONAL INPUT PARAMETERS:
 KEYWORD INPUT PARAMETERS:
 OUTPUTS:
 KEYWORD OUTPUT PARAMETERS:
 COMMON BLOCKS:
 SIDE EFFECTS:
 RESTRICTIONS:
 PROCEDURE:
 MODIFICATION HISTORY:
  Written by Doug Loucks, Lowell Observatory, 2005/10/08
  2006/12/08, MWB, added RESULT output keyword and SILENT flag
  2007/12/09, MWB, added missing test for master database documentation