add and document Gtk2::GET_VERSION_INFO; change Gtk2::Pango::get_version_info to Gtk2::Pango::GET_VERSION_INFO.  put version docs in Foo::version.
add and document Gtk2::GET_VERSION_INFO; change Gtk2::Pango::get_version_info
to Gtk2::Pango::GET_VERSION_INFO.  put version docs in Foo::version.

svn path=/trunk/; revision=1262

cpanxaoc/perl-Gtk2,potyl/perl-Gtk2,potyl/perl-Gtk2,cpanxaoc/perl-Gtk2,potyl/perl-Gtk2,cpanxaoc/perl-Gtk2