* component/automake: version up 1.15.1 for perl 5.26.
* component/perl-Encode-HanExtra: fix for perl 5.26.0 that no longer contains . in @INC.
* component/perl-XML-NamespaceSupport: fix for perl 5.26.0 that no longer contains . in @INC.
* component/intltool: version up 0.51.0 and add a patch for perl 5.26.
* component/perl-CGI: added for w3-validator because Perl 5.26 no longer includes it.
* component/perl-URI: version up 1.71.