MINOR: tools: add FreeBSD support to get_exec_path()

FreeBSD stores the absolute path into the auxiliary vector as well.
The auxiliary vector is found in __elf_aux_vector there.

(cherry picked from commit c4e5232db89786bdd12cf8d23cedd17a8c65770c)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
1 file changed