Never mind, this doesn't actually work. it was just a fluke of the small data set I tried it against...

Though I have to supress 'is not numeric' warnings, a simple numeric sort seems to produce the order you want....

#!/usr/bin/perl -wT
use strict;

my @versions=qw(2.0.0 1.0.9 1.0.10 1.1.0 1.1.2 1.0.90);
my @sorted = do {no warnings 'numeric'; sort {$a <=> $b} @versions };

print "$_\n" for @sorted;

__END__

1.0.9
1.0.10
1.0.90
1.1.0
1.1.2
2.0.0
[download]

-Blake