Bump version to 2.20.0.

portlint.pl

@@ -48,8 +48,8 @@ $portdir = '.';
 
 # version variables
 my $major = 2;
-my $minor = 19;
-my $micro = 14;
+my $minor = 20;
+my $micro = 0;
 
 # default setting - for FreeBSD
 my $portsdir = '/usr/ports';