glib2: Fix glib-gettextize

Of course it was made from a template which has
datadir=@datadir@
... and the next line:
gettext_dir=$prefix/shared/glib-2.0/gettext

Go figure :-D

dev-libs/glib/patches/glib2-2.38.1.patch

@@ -431,3 +431,29 @@ index 2620cb6..34f1edd 100644
  #if defined(G_OS_WIN32)
  static void
  load_user_special_dirs (void)
+From 76b841117910d28f624d0758a276ef9e6816bb73 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Fran=C3=A7ois=20Revol?= <revol@free.fr>
+Date: Wed, 23 Jul 2014 17:39:04 +0200
+Subject: [PATCH] Fix path in glib-gettextize
+
+Why define datadir if you use $prefix/share/ ?
+---
+ glib-gettextize.in | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/glib-gettextize.in b/glib-gettextize.in
+index 7166cf7..a175578 100644
+--- a/glib-gettextize.in
++++ b/glib-gettextize.in
+@@ -52,7 +52,7 @@ esac
+ datarootdir=@datarootdir@
+ datadir=@datadir@
+ 
+-gettext_dir=$prefix/share/glib-2.0/gettext
++gettext_dir=$datadir/glib-2.0/gettext
+ 
+ while test $# -gt 0; do
+   case "$1" in
+-- 
+1.8.3.4
+