File::SafeDO -- safer do file for perl
  use File::SafeDO qw(
        DO
        doINCLUDE
  );
  $rv = DO($file,[optional no warnings string])
  - $rv = DO($file,[optional] "no warnings
      string");
    This is a fancy 'do file'. It first checks that the file
        exists and is readable, then does a 'do file' to pull the variables and
        subroutines into the current name space. The 'do' is executed with full
        perl warnings so that syntax and construct errors are reported to
        STDERR. A string of no warnings may optionally be
        specified as a second argument. This is equivalent to saying:   no warnings qw(string of no values);
    See: man perllexwarnings for a full listing of warning
      names.   input:        file/path/name,
            [optional] string of "no" warnings
  returns:      last value in file
            or  undef on error
            prints warning
  i.e. DO('myfile','once redefine');
    This will execute 'myfile' safely and suppress 'once' and
        'redefine' warnings to STDERR. 
- $rv = doINCLUDE($file,[optional] "no warnings
      string");
    The function is similar to DO above with the addition
        of recursive loads. Function will recursively load a file which returns a hash
        pointer with the a key of the form:         'INCLUDE' => somefile.
    The file which it loads may contain only HASHs or SUBs. The
        HASH KEYS will be promoted into the parent hash, augmenting and
        replacing existing keys already present. Subroutines are simply imported
        into the name space as is the case with a 'do' or 'require'. 
Michael Robinton, michael@bizsystems.com
Copyright 2003 - 2014, Michael Robinton & BizSystems This
    program is free software; you can redistribute it and/or modify it under the
    terms of the GNU General Public License as published by the Free Software
    Foundation; either version 2 of the License, or (at your option) any later
    version.
This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
    Public License for more details.
You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software Foundation,
    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.