Log variables moved to log_manager.h

The log manager variables lm_enabled_log_files_bitmask, log_ses_count
and tls_log_info that earlier were declared separately in every
c-file are now declared in the log_manager.h header.

server/modules/routing/GaleraHACRoute.c

@@ -47,8 +47,6 @@
 
 #include <mysql_client_server_protocol.h>
 
-extern int lm_enabled_logfiles_bitmask;
-
 static char *version_str = "V1.0.0";
 
 /* The router entry points */