Add support for global logfile max size and max num. rotated

# Max file size for each log file: 100 kiB, rotate max 4 copies:
    # log => log.1 => log.2.gz => log.3.gz => log.4.gz
    log size=100k count=4

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

src/conf.h

@@ -26,6 +26,9 @@
 
 #include "svc.h"
 
+extern int logfile_size_max;
+extern int logfile_count_max;
+
 extern struct rlimit global_rlimit[];
 
 int   str2rlim(char *str);