ragel: Fix build on Mavericks.

Signed-off-by: Rudá Moura <ruda.moura@gmail.com>
Scons formula: remove Config.mk reference.

Signed-off-by: Rudá Moura <ruda.moura@gmail.com>
Update stunnel to version 5.01.

Signed-off-by: Rudá Moura <ruda.moura@gmail.com>
Update subversion to version 1.8.8.

Signed-off-by: Rudá Moura <ruda.moura@gmail.com>