[gimp/gimp-2-10] configure.ac: release GIMP 2.10.4

[Michael Natterer <mitch src gnome org>]

commit e384409fe5587fb5f217a5ca60f858068c930e4f
Author: Michael Natterer <mitch gimp org>
Date:   Wed Jul 4 20:04:20 2018 +0200

    configure.ac: release GIMP 2.10.4

 configure.ac | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 76dee82df1..863ca767f7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -11,11 +11,11 @@ AC_PREREQ(2.54)
 
 m4_define([gimp_major_version], [2])
 m4_define([gimp_minor_version], [10])
-m4_define([gimp_micro_version], [3])
+m4_define([gimp_micro_version], [4])
 m4_define([gimp_real_version],
           [gimp_major_version.gimp_minor_version.gimp_micro_version])
 m4_define([gimp_version], [gimp_real_version])
-m4_define([gimp_interface_age], [3])
+m4_define([gimp_interface_age], [4])
 m4_define([gimp_binary_age],
           [m4_eval(100 * gimp_minor_version + gimp_micro_version)])