Recognise VERBOSE and V as well as HARNESS_VERBOSE

     malfunction with Perl).  You may want increased verbosity, that

     can be accomplished like this:

       $ HARNESS_VERBOSE=yes make test                  # Unix

       $ make VERBOSE=1 test                            # Unix

       $ DEFINE HARNESS_VERBOSE YES

       $ DEFINE VERBOSE 1

       $ mms test                                       ! OpenVMS

       $ set HARNESS_VERBOSE=yes

       $ nmake test                                     # Windows

       $ nmake VERBOSE=1 test                           # Windows

     If you want to run just one or a few specific tests, you can use

     the make variable TESTS to specify them, like this:

     And of course, you can combine (Unix example shown):

       $ HARNESS_VERBOSE=yes make TESTS='test_rsa test_dsa' test

       $ make VERBOSE=1 TESTS='test_rsa test_dsa' test

     You can find the list of available tests like this:

use strict;

use warnings;

# Recognise VERBOSE and V which is common on other projects.

BEGIN {

    $ENV{HARNESS_VERBOSE} = "yes" if $ENV{VERBOSE} || $ENV{V};

}

use File::Spec::Functions qw/catdir catfile curdir abs2rel rel2abs/;

use File::Basename;

use Test::Harness qw/runtests $switches/;