command: added command_success() and command_error()

These two functions take a client struct instead of the file
descriptor.  We will now begin passing the client struct around
instead of a raw file descriptor (which needed a linear lookup in the
client list to be useful).

src/command.h

@@ -22,7 +22,6 @@
 #include "gcc.h"
 #include "os_compat.h"
 #include "sllist.h"
-#include "myfprintf.h"
 
 #define COMMAND_RETURN_KILL	10
 #define COMMAND_RETURN_CLOSE	20
@@ -40,8 +39,11 @@ void initCommands(void);
 
 void finishCommands(void);
 
-#define commandSuccess(fd)              fdprintf(fd, "OK\n")
-
 mpd_fprintf_ void commandError(int fd, int error, const char *fmt, ...);
 
+void command_success(struct client *client);
+
+mpd_fprintf_ void command_error(struct client *client, int error,
+				const char *fmt, ...);
+
 #endif