fakeinetd: attempted ipv6-ization (and it's done)

but entire applet can be orders of magnitude smaller
if written as an inetd service.
So did that (#ifdef'ed out entire old version).
inetd version is less than 10% of old one!
function                                             old     new   delta
packed_usage                                       22083   22105     +22
nobodystr                                              4       -      -4
bind_ip_address                                        4       -      -4
ident_substr                                          20       -     -20
chmatch                                               22       -     -22
movefd                                                25       -     -25
skipchars                                             49       -     -49
handlexitsigs                                         51       -     -51
replyError                                            70       -     -70
.rodata                                           158120  158024     -96
deleteConn                                           102       -    -102
G                                                    524     388    -136
conns                                                560       -    -560
fakeidentd_main                                     1457     143   -1314
------------------------------------------------------------------------------
(add/remove: 0/10 grow/shrink: 1/3 up/down: 22/-2453)       Total: -2431 bytes

1 files changed, 9 insertions, 0 deletions

diff --git a/include/usage.h b/include/usage.h
index 14650e5de..4e5206558 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -826,6 +826,7 @@
        "\\( and \\) or null; if \\( and \\) are not used, they return the number\n" \
        "of characters matched or 0."
 
+#if 0 /* bloaty */
 #define fakeidentd_trivial_usage \
        "[-b ip] [STRING]"
 #define fakeidentd_full_usage \
@@ -833,6 +834,14 @@
        "\n\nOptions:\n" \
        "        -b      Bind to ip address\n" \
        "        STRING  The ident answer string (default is nobody)"
+#else /* inetd-only */
+#define fakeidentd_trivial_usage \
+       "[username]"
+#define fakeidentd_full_usage \
+       "Return a (faked) ident response.\n" \
+       "This applet is meant to run from inetd.\n" \
+       "Optional argument is the username to return (default is 'nobody')."
+#endif
 
 #define false_trivial_usage \
        ""