cmdline: renamed option "--stdout" to "--stderr"

Since version 0.14, MPD has been logging to standard error instead of
standard output.  The option name should reflect that.  The old option
continues to work, we will remove it in a future MPD release.

NEWS

@@ -20,6 +20,7 @@ ver 0.16 (20??/??/??)
   - added new "status" line with more precise "elapsed time"
 * log unused/unknown block parameters
 * save state when stopped
+* renamed option "--stdout" to "--stderr"
 
 
 ver 0.15 (2009/06/23)

doc/mpd.1

@@ -34,8 +34,8 @@ Do not create database, even if it doesn't exist.
 .BI --no-daemon
 Don't detach from console.
 .TP
-.BI --stdout
-Print messages to stdout and stderr.
+.BI --stderr
+Print messages stderr.
 .TP
 .BI --verbose
 Verbose logging.

src/cmdline.c

@@ -97,6 +97,8 @@ void parse_cmdline(int argc, char **argv, struct options *options)
 		{ "no-daemon", 0, 0, G_OPTION_ARG_NONE, &option_no_daemon,
 		  "don't detach from console", NULL },
 		{ "stdout", 0, 0, G_OPTION_ARG_NONE, &options->stderr,
+		  NULL, NULL },
+		{ "stderr", 0, 0, G_OPTION_ARG_NONE, &options->stderr,
 		  "print messages to stderr", NULL },
 		{ "verbose", 'v', 0, G_OPTION_ARG_NONE, &options->verbose,
 		  "verbose logging", NULL },