- Fix build with new ODE, scorched3d tries to force a double build of (its
        own included version of) ODE, however we use the system version which
        is compiled with single precision. With the new ODE the header files
        throw an #error because this causes both dSINGLE and dDOUBLE to be
        defined. This is fixed by patching scorched3d's configure to not add
        -DdDOUBLE to the CFLAGS