A little fix in configure.ac

[Maksim A. Boyko]

Hi,

--- configure.ac        (revision 1096713)
+++ configure.ac        (working copy)
@@ -102,7 +102,7 @@
 have_cpp=no
 if test "$with_cpp" = "yes";  then
   AX_BOOST_BASE([1.33.1])
-  if test "x$succeeded" == "xyes" ; then
+  if test "x$succeeded" = "xyes" ; then
     have_cpp="yes"
   fi

-- 
Best regards, Maksim A. Boyko