New Packages: perl-Gtk2 perl binding for Gtk2

correctly building, I've polluted another time my local install
this time it will pull the packages perl-Cairo and perl-Pango from
hostdir and made a mess in my testing, maybe an options:

"xbps-src sanitize"

that will clean all the building environment wil have avoided this
error, it's only an idea.

It's my fault sorry

regards

Carlo
Merge pull request #420 from onekk/master

New Packages: perl-Gtk2 perl binding for Gtk2