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/binlog/blr_master.c

@@ -78,10 +78,6 @@
 #include <mysql_client_server_protocol.h>
 
 
-extern int lm_enabled_logfiles_bitmask;
-extern size_t         log_ses_count[];
-extern __thread log_info_t tls_log_info;
-
 static GWBUF *blr_make_query(char *statement);
 static GWBUF *blr_make_registration(ROUTER_INSTANCE *router);
 static GWBUF *blr_make_binlog_dump(ROUTER_INSTANCE *router);