[gimp] configure: argh! Forgot to AC_SUBST() the GEGL major-minor version.

[Jehan Pagès <jehanp src gnome org>]

commit 245143532325783fb3414a74cbf58adc8a3199e8
Author: Jehan <jehan girinstud io>
Date:   Sat Apr 28 01:45:45 2018 +0200

    configure: argh! Forgot to AC_SUBST() the GEGL major-minor version.

 configure.ac |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 33754e3..e28a55e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -174,6 +174,7 @@ AC_SUBST(GTK_REQUIRED_VERSION)
 AC_SUBST(GTK_WIN32_RECOMMENDED_VERSION)
 AC_SUBST(CAIRO_REQUIRED_VERSION)
 AC_SUBST(CAIRO_PDF_REQUIRED_VERSION)
+AC_SUBST(GEGL_MAJOR_MINOR_VERSION)
 AC_SUBST(GEGL_REQUIRED_VERSION)
 AC_SUBST(GEXIV2_REQUIRED_VERSION)
 AC_SUBST(LCMS_REQUIRED_VERSION)