Renamed log() to log_msg(), but still keeping the old name as a macro.

This is done to avoid clashes with gcc-3.3 which has built-in logarithms :)

sysdep/unix/log.c

@@ -114,7 +114,7 @@ vlog(int class, char *msg, va_list args)
  * formatted as a full line, no need to include |\n| inside.
  */
 void
-log(char *msg, ...)
+log_msg(char *msg, ...)
 {
   int class = 1;
   va_list args;