[gnome-system-monitor] [Build] Added back USE_COMMON_DOC_BUILD=yes in autogen.sh

[Chris Kühl <chriskuehl src gnome org>]

commit 38fbf64d60745e3830a51dc36a18d2e3f0f01ad3
Author: Chris Kühl <chrisk openismus com>
Date:   Mon Mar 7 19:20:01 2011 +0100

    [Build] Added back USE_COMMON_DOC_BUILD=yes in autogen.sh
    
    * This was giving me "make: *** No rule to make target `omf.make',
    needed by `distdir'.  Stop." when running make distcheck.
    * This was removed in commit f3dc7731.

 autogen.sh |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/autogen.sh b/autogen.sh
index 866ffd7..7536df0 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -17,4 +17,6 @@ which gnome-autogen.sh || {
     exit 1
 }
 
+USE_COMMON_DOC_BUILD=yes
+
 . gnome-autogen.sh