Way to check for libccd additions

[Former user]

I don't think there's any way to check at runtime if libccd is used, or which parts of it are.

[Oleh Derevenko]

You are right. It doesn’t look like there is anything for that. I’m going to add one.

[Oleh Derevenko]

The following strings have been added in trunk with commit 2204

• ODE_EXT_libccd

• ODE_CCD_IMPL_internal

• ODE_CCD_COLL_box_cyl

• ODE_CCD_COLL_cyl_cyl

• ODE_CCD_COLL_cap_cyl

• ODE_CCD_COLL_box_conv

• ODE_CCD_COLL_cap_conv

• ODE_CCD_COLL_conv_cyl

• ODE_CCD_COLL_conv_sph

• ODE_CCD_COLL_conv_conv

‌