[perl-Gtk2] perl-5.26.0 compatibility

[Torsten Schönfeld <tsch src gnome org>]

commit 782a44c8a4022fc22cde551277ab63c8c5e1a6af
Author: Torsten Schönfeld <kaffeetisch gmx de>
Date:   Mon Apr 3 15:52:35 2017 +0200

    perl-5.26.0 compatibility
    
    perl-5.26.0 will not include '.' in @INC by default.  Adjust a 'require'
    statement accordingly.

 Makefile.PL |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.PL b/Makefile.PL
index 54b2c52..91051dc 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -267,7 +267,7 @@ $gtk2->save_config ('build/IFiles.pm');
 
 # exports list needed for win32, unused on others
 our @exports;
-require 'Gtk2.exports';
+require './Gtk2.exports';
 
 my %meta_merge = (
         q(meta-spec)          => {