Autotools settings adjustments

- removed maintainer-mode
- RANLIB useless

autogen.sh

@@ -1,3 +1,3 @@
 #! /bin/sh
 autoreconf -v --install || exit 1
-./configure --enable-maintainer-mode "$@"
+./configure "$@"

configure.ac

@@ -13,7 +13,6 @@ AC_PROG_CC
 AC_PROG_CXX
 AC_PROG_MAKE_SET
 AC_PROG_LIBTOOL
-AC_PROG_RANLIB
 
 # Checks for header files.
 AC_HEADER_STDC