ptr_list_push_addr - unconditionaly add an ElfW(Addr)
ptr_list_push_ptr  - unconditionaly add a void *
ptr_list_contains  - check if an ElfW(addr) is present
ptr_list_add_ptr   - add a void * only if not currently in list
ptr_list_push      - renamed to ptr_list_push_addr

Conflicts:
	utils/utils.c