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/core/utils.c

@@ -44,11 +44,6 @@
 #include <log_manager.h>
 #include <secrets.h>
 
-/** Defined in log_manager.cc */
-extern int            lm_enabled_logfiles_bitmask;
-extern size_t         log_ses_count[];
-extern __thread log_info_t tls_log_info;
-
 /* used in the hex2bin function */
 #define char_val(X) (X >= '0' && X <= '9' ? X-'0' :\
                      X >= 'A' && X <= 'Z' ? X-'A'+10 :\