Fix -cchannels to be as it were pre 0.67

docs/Changelog

@@ -19,6 +19,7 @@ pisg (0.69) - ??
      + Use nested HTML comments in CSS to cheat XML error having "<set ..>"
        in the CSS file.
      + Fix title tooltip (SF #1492153).
+     + Fix -cchannels option (SF #1369457).
    * Features:
      + Add "+CVS" to versionstring if ./CVS is found
    Language Updates:

modules/Pisg.pm

@@ -551,7 +551,7 @@ sub parse_channels
             my $hits = 0;
             foreach ( @{ $self->{chans} }) {
                 my $chan = (keys %{ $_ })[0];
-                if ($channel =~ m/^$chan$/i) {
+                if (lc($channel) eq lc($chan)) {
                     push @chanlist, $_;
                     $hits++;
                 }