syslogd,logread: get rid of head pointer, fix logread bug in the process

function                                             old     new   delta
logread_main                                         450     462     +12
syslogd_main                                        1246    1252      +6
shbuf                                                  -       4      +4
buf                                                   34      30      -4
packed_usage                                       22729   22724      -5
log_locally                                          957     767    -190
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 2/3 up/down: 22/-199)          Total: -177 bytes
   text    data     bss     dec     hex filename
 773886    1116   11316  786318   bff8e busybox_old
 773714    1116   11316  786146   bfee2 busybox_unstripped

1 files changed, 5 insertions, 5 deletions

diff --git a/include/usage.h b/include/usage.h
index 9c14f4508..3f2916006 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -3327,17 +3327,17 @@ USE_FEATURE_RUN_PARTS_FANCY("\n	-l	Prints names of all matching files even when
        "Note that this version of syslogd ignores /etc/syslog.conf." \
        "\n\nOptions:" \
        "\n      -n              Run as foreground process" \
-       "\n      -O FILE         Use an alternate log file (default=/var/log/messages)" \
-       "\n      -l n            Sets the local log level of messages to n" \
-       "\n      -S              Make logging output smaller" \
+       "\n      -O FILE         Log to given file (default=/var/log/messages)" \
+       "\n      -l n            Set local log level" \
+       "\n      -S              Smaller logging output" \
         USE_FEATURE_ROTATE_LOGFILE( \
        "\n      -s SIZE         Max size (KB) before rotate (default=200KB, 0=off)" \
        "\n      -b NUM          Number of rotated logs to keep (default=1, max=99, 0=purge)") \
         USE_FEATURE_REMOTE_LOG( \
        "\n      -R HOST[:PORT]  Log to IP or hostname on PORT (default PORT=514/UDP)" \
-       "\n      -L              Log locally and via network logging (default is network only)") \
+       "\n      -L              Log locally and via network (default is network only if -R)") \
         USE_FEATURE_IPC_SYSLOG( \
-       "\n      -C[size(KiB)]   Log to a shared mem buffer (read the buffer using logread)")
+       "\n      -C[size(KiB)]   Log to shared mem buffer (read it using logread)")
         /* NB: -Csize shouldn't have space (because size is optional) */
 /*     "\n      -m MIN          Minutes between MARK lines (default=20, 0=off)" */
 #define syslogd_example_usage \