[vte] build: Fix srcdir != builddir issue

[Christian Persch <chpe src gnome org>]

commit 4af7670b6e429f4f15c0f5597ce4d4d276d53151
Author: Christian Persch <chpe gnome org>
Date:   Wed Apr 1 18:58:01 2015 +0200

    build: Fix srcdir != builddir issue
    
    https://bugzilla.gnome.org/show_bug.cgi?id=747137

 src/Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/Makefile.am b/src/Makefile.am
index 9536b4d..16b2562 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -173,7 +173,7 @@ include $(INTROSPECTION_MAKEFILE)
 
 Vte- VTE_API_VERSION@.gir: libvte-$(VTE_API_VERSION).la
 Vte_ VTE_API_VERSION_U@_gir_INCLUDES = Pango-1.0 Gdk-$(GTK_API_VERSION) Gtk-$(GTK_API_VERSION)
-Vte_ VTE_API_VERSION_U@_gir_CFLAGS = $(VTE_CFLAGS) -DVTE_COMPILATION -I$(top_srcdir)
+Vte_ VTE_API_VERSION_U@_gir_CFLAGS = $(VTE_CFLAGS) -DVTE_COMPILATION -I$(builddir)/vte
 Vte_ VTE_API_VERSION_U@_gir_LIBS = libvte-$(VTE_API_VERSION).la
 Vte_ VTE_API_VERSION_U@_gir_EXPORT_PACKAGES = vte-$(VTE_API_VERSION)
 Vte_ VTE_API_VERSION_U@_gir_SCANNERFLAGS = --c-include "vte/vte.h"