Move RAMLOG driver to drivers/syslog; Add ability to output debug information to any character device or file

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4996 42af7a65-404d-4744-a932-0658087f49c3

lib/stdio/lib_lowprintf.c

@@ -94,7 +94,7 @@ int lib_lowvprintf(const char *fmt, va_list ap)
 
   /* Wrap the stdout in a stream object and let lib_vsprintf do the work. */
 
-#if defined(CONFIG_RAMLOG_CONSOLE) || defined(CONFIG_RAMLOG_SYSLOG)
+#ifdef CONFIG_SYSLOG
   lib_syslogstream((FAR struct lib_outstream_s *)&stream);
 #else
   lib_lowoutstream((FAR struct lib_outstream_s *)&stream);

lib/stdio/lib_syslogstream.c

@@ -42,7 +42,7 @@
 #include <unistd.h>
 #include <errno.h>
 
-#include <nuttx/ramlog.h>
+#include <nuttx/syslog.h>
 
 #include "lib_internal.h"
 
@@ -62,12 +62,10 @@
 
 static void syslogstream_putc(FAR struct lib_outstream_s *this, int ch)
 {
-  /* At present, the RAM log is the only supported logging device */
+  /* Write the character to the supported logging device */
 
-#ifdef CONFIG_RAMLOG_SYSLOG
-  (void)ramlog_putc(ch);
+  (void)syslog_putc(ch);
   this->nput++;
-#endif
 }
 
 /****************************************************************************