libbb: nuke BB_GETOPT_ERROR, always die if there are mutually exclusive options
find_pair                                            164     180     +16
passwd_main                                         1222    1230      +8
display_speed                                         91      96      +5
msh_main                                            1335    1339      +4
qrealloc                                              38      36      -2
refresh                                             1190    1182      -8
cut_main                                             543     532     -11
sendCgi                                             1807    1794     -13
getopt32                                            1063    1045     -18
arith                                               2077    2030     -47
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/6 up/down: 33/-99)            Total: -66 bytes
   text    data     bss     dec     hex filename
 781548    1168   11900  794616   c1ff8 busybox_old
 781452    1168   11900  794520   c1f98 busybox_unstripped


diff --git a/coreutils/install.c b/coreutils/install.c
index 5503b55..8d71fa0 100644
--- a/coreutils/install.c
+++ b/coreutils/install.c
@@ -99,7 +99,7 @@
 #if ENABLE_FEATURE_INSTALL_LONG_OPTIONS
 	applet_long_options = install_long_options;
 #endif
-	opt_complementary = "?:s--d:d--s" USE_SELINUX(":Z--\xff:\xff--Z");
+	opt_complementary = "s--d:d--s" USE_SELINUX(":Z--\xff:\xff--Z");
 	/* -c exists for backwards compatibility, it's needed */
 
 	flags = getopt32(argc, argv, "cdpsg:m:o:" USE_SELINUX("Z:"),