The ups v4_7 release 
* finalizes extended flavor matching
* finalizes improved qualifier matching
* adds setups.pl

Extended Flavor Matching

  This new flavor matching extension assumes backwards compatability for
  operating systems, and also adds "ups flavor -4".  If a component of a 
  flavor is numeric, it is counted down numerically to find compatable 
  packages, so under the old scheme you would use for a Linux system we 
  would try flavors:
    Linux+2.4.9-2
    Linux+2.4
    Linux+2
    Linux
    NULL
  In the new scheme we would try:
    Linux+2.4.9-2
    Linux+2.4.9-1
    Linux+2.4.9-0
    Linux+2.4.9
    Linux+2.4.8
    Linux+2.4.7
    Linux+2.4.6
    Linux+2.4.5
    Linux+2.4.4
    Linux+2.4.3
    Linux+2.4.2
    Linux+2.4.1
    Linux+2.4.0
    Linux+2.4
    Linux+2.3
    Linux+2.2
    Linux+2.1
    Linux+2.0
    Linux+2
    Linux+1
    Linux+0

Improved Qualifier Matching

   Under the new system qualifiers default to being optional (and can
   be made mandatory with a '+' sign.)  Also, a new variable for table
   files has been provided ${UPS_REQ_QUALIFIERS}, which is the list of
   requested qualifiers, as distinct from those that matched.   This
   allows you to pass requested qualifiers down to dependant products
   in table files -- so if your table file for product "foo" looks like:

   Action=setup
     SetupRequired(bar -q "${UPS_REQ_QUALIFIERS}")
     SetupRequired(baz -q "${UPS_REQ_QUALIFIERS}")

  and you do a "ups depend foo -q apple:orange", and bar has an "apple"
  qualifier, and baz has an "orange" qualifier, and foo has none, you
  will get a depenency like:

       foo v1_0 -f NULL -g current
       |__bar v1_0 -f NULL -q apple -g current
       |__baz v1_0 -f NULL -q orange -g current

  This sort of arrangement makes dealing with various qualifiers of 
  dependency hierarchies much easier to manage.

setups.pl

  This is perhaps best described with an example:

    #!/usr/bin/env perl
    require "/usr/local/etc/setups.pl";

    # make sure we're using the right ups version of perl
    ups::use_perl("v5_005a");

    print @INC;

    # make sure we have dependant products available before using
    # them
    ups::setup("pgp");
    ups::setup("xemacs v20_4");

    print "PGP_DIR is ", $::ENV{PGP_DIR}, "\n";
	print "XEMACS_DIR is ", $::ENV{XEMACS_DIR}, "\n";

	ups::setup("xemacs v21_1");

	print "XEMACS_DIR is ", $::ENV{XEMACS_DIR}, "\n";