Added logsave.c and logsave.8 manual page from e2fsprogs to make

sure logsave is available to initscripts.

Updated src/Makefile to make sure bootlogd compiles with Clang.

man/logsave.8

@@ -0,0 +1,61 @@
+.\" -*- nroff -*-
+.\" Copyright 2003 by Theodore Ts'o.  All Rights Reserved.
+.\" This file may be copied under the terms of the GNU Public License.
+.\"
+.TH LOGSAVE 8 "@E2FSPROGS_MONTH@ @E2FSPROGS_YEAR@" "E2fsprogs version @E2FSPROGS_VERSION@"
+.SH NAME
+logsave \- save the output of a command in a logfile
+.SH SYNOPSIS
+.B logsave
+[
+.B \-asv
+]
+.I logfile cmd_prog [ ... ]
+.SH DESCRIPTION
+The
+.B logsave
+program will execute
+.I cmd_prog
+with the specified argument(s), and save a copy of its output to
+.IR logfile .
+If the containing directory for
+.I logfile
+does not exist,
+.B logsave
+will accumulate the output in memory until it can be written out.
+A copy of the output will also be written to standard output.
+.PP
+If
+.I cmd_prog
+is a single hyphen ('-'), then instead of executing a program,
+.B logsave
+will take its input from standard input and save it in
+.I logfile
+.PP
+.B logsave
+is useful for saving the output of initial boot scripts
+until the /var partition is mounted, so the output can be written to
+/var/log.
+.SH OPTIONS
+.TP
+.B \-a
+This option will cause the output to be appended to
+.IR logfile ,
+instead of replacing its current contents.
+.TP
+.B \-s
+This option will cause
+.B logsave
+to skip writing to the log file text which is bracketed with a control-A
+(ASCII 001 or Start of Header) and control-B (ASCII 002 or Start of
+Text).  This allows progress bar information to be visible to the user
+on the console, while not being written to the log file.
+.TP
+.B \-v
+This option will make
+.B logsave
+to be more verbose in its output to the user.
+.SH AUTHOR
+Theodore Ts'o (tytso@mit.edu)
+.SH SEE ALSO
+.BR fsck (8)