Use AC_MSG_NOTICE to print configure results.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>

configure.ac

@@ -642,10 +642,10 @@ tests/src/filemanager/Makefile
 ])
 fi
 
-
 AC_OUTPUT
 
-echo "
+AC_MSG_NOTICE([
+
 Configuration:
 
   Source code location:       ${srcdir}
@@ -662,4 +662,4 @@ Configuration:
   Diff viewer:                ${diff_msg}
   Support for charset:        ${charset_msg}
   Search type:                ${SEARCH_TYPE}
-"
+])