Improve autoconf checking of boost_python

m4/ax_boost_python.m4

@@ -82,8 +82,12 @@ if test "$ac_cv_boost_python" = "yes"; then
      ax_python_lib=$with_boost_python
      ax_boost_python_lib=boost_python-$with_boost_python
    fi])
-  for ax_lib in $ax_python_lib $ax_boost_python_lib boost_python boost_python-mt boost_python-mt-py2.5; do
+  for ax_lib in $ax_python_lib $ax_boost_python_lib boost_python boost_python-mt; do
     AC_CHECK_LIB($ax_lib, exit, [BOOST_PYTHON_LIB=$ax_lib break])
+    ax_lib_alt=${ax_lib}-py$PYTHON_VERSION
+    AC_CHECK_LIB($ax_lib_alt, exit, [BOOST_PYTHON_LIB=$ax_lib_alt break])
+    ax_lib_alt=${ax_lib}-$PYTHON_VERSION
+    AC_CHECK_LIB($ax_lib_alt, exit, [BOOST_PYTHON_LIB=$ax_lib_alt break])
   done
   AC_SUBST(BOOST_PYTHON_LIB)
 fi