* elf/rtld.c: Define RTLD_BOOTSTRAP before #include "dynamic-link.h".
* sysdeps/i386/dl-machine.h (elf_machine_rel): Remove weak decl for
_dl_rtld_map.
(RESOLVE): New macro, defined differently based on [RTLD_BOOTSTRAP].
(elf_machine_rel): Use it instead of testing fn ptr arg at runtime.
(elf_machine_rel: case R_386_32) [! RTLD_BOOTSTRAP]: Declare
_dl_rtld_map weak only here.
* posix/unistd.h [__USE_BSD]: Declare getdomainname, setdomainname.