what I have:

bdimych@bolshakovxp ~
$ perl -v

This is perl, v5.10.0 built for cygwin-thread-multi-64int
(with 6 registered patches, see perl -V for more detail)

Copyright 1987-2007, Larry Wall

Perl may be copied only under the terms of either the Artistic License
+ or the
GNU General Public License, which may be found in the Perl 5 source ki
+t.

Complete documentation for Perl, including FAQ lists, should be found 
+on
this system using "man perl" or "perldoc perl".  If you have access to
+ the
Internet, point your browser at http://www.perl.org/, the Perl Home Pa
+ge.


bdimych@bolshakovxp ~
$ cat 1.pl 
BEGIN {
    use overload;
    use Data::Dumper;
    overload::constant 'q' => sub {
        print Dumper \@_;
    };
}
qq(echo aaa);
qx(echo aaa);

bdimych@bolshakovxp ~
$ perl 1.pl
$VAR1 = [
          'echo aaa',
          'echo aaa',
          'qq'
        ];
$VAR1 = [
          'echo aaa',
          'echo aaa',
          'qq'
        ];

bdimych@bolshakovxp ~
$ uname -a
CYGWIN_NT-5.1 bolshakovxp 1.5.25(0.156/4/2) 2008-06-12 19:34 i686 Cygw
+in
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