trylink: automatically use custom link script if user provides one

vinfo_msg: one user (info_msg), incorporate in it
*: style fixes

libbb/info_msg.c

@@ -7,13 +7,24 @@
  * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
  */
 
+#include <syslog.h>
 #include "libbb.h"
 
 void bb_info_msg(const char *s, ...)
 {
 	va_list p;
+	/* va_copy is used because it is not portable
+	 * to use va_list p twice */
+	va_list p2;
 
 	va_start(p, s);
-	bb_vinfo_msg(s, p);
+	va_copy(p2, p);
+	if (logmode & LOGMODE_STDIO) {
+		vprintf(s, p);
+		fputs(msg_eol, stdout);
+	}
+	if (ENABLE_FEATURE_SYSLOG && (logmode & LOGMODE_SYSLOG))
+		vsyslog(LOG_INFO, s, p2);
+	va_end(p2);
 	va_end(p);
 }