Branch b1_4

b=10143
r=adilger

Add --disable-readline option, make it the default for --enable-bgl.

build/autoconf/lustre-build.m4

@@ -279,6 +279,7 @@ if test x$enable_bgl != xno; then
         enable_tests='no'
         enable_server='no'
         enable_liblustre='no'
+        enable_libreadline='no'
 fi
 ])