Use the automake 1.10 in autogen.sh

BUG=ibus:1039
TEST=manual

Review URL: http://codereview.appspot.com/2746041

autogen.sh

@@ -22,4 +22,4 @@ which gnome-autogen.sh || {
     touch $srcdir/ChangeLog
 }
 
-ACLOCAL_FLAGS="$ACLOCAL_FLAGS -I m4" REQUIRED_AUTOMAKE_VERSION=1.8 CFLAGS="-Wall -Werror" . gnome-autogen.sh
+ACLOCAL_FLAGS="$ACLOCAL_FLAGS -I m4" REQUIRED_AUTOMAKE_VERSION=1.10 CFLAGS="-Wall -Werror" . gnome-autogen.sh