[jhbuild] Build gdm using --with-log-dir

[Michael Catanzaro <mcatanzaro src gnome org>]

commit df7c5527ebf7de84411da716df7f432d60193cda
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Sun Aug 30 08:42:44 2015 -0500

    Build gdm using --with-log-dir
    
    We don't have permission to write to /var/log/gdm

 modulesets/gnome-suites-core-3.18.modules |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/modulesets/gnome-suites-core-3.18.modules b/modulesets/gnome-suites-core-3.18.modules
index df54f7b..9eb4255 100644
--- a/modulesets/gnome-suites-core-3.18.modules
+++ b/modulesets/gnome-suites-core-3.18.modules
@@ -927,7 +927,7 @@
     </dependencies>
   </autotools>
 
-  <autotools id="gdm" autogenargs="--with-systemdsystemunitdir=no">
+  <autotools id="gdm" autogenargs="--with-systemdsystemunitdir=no --with-log-dir=${prefix}/var/log/gdm">
     <if condition-unset="linux">
       <autogenargs value="--without-plymouth"/>
     </if>