Fixes to Coverity issues 77197 (mysql_common.c, dcb.c, mysql_client.c, skygw_debug.h), 72654 (poll.c), 72756 (mysql_backend.c), 72744 (mysql_backend.c), 77197 (mysql_common.c), 72746 (mysql_common.c), 72676 (mysql_common.c), 72705 (readwritesplit.c), 72697 (readwritesplit.c), 72652 (skygw_debug.h)
Addition to previous fix
Merge branch 'develop' of https://github.com/mariadb-corporation/MaxScale into develop
Removed unnecessary local variables for errno since it is thread safe.
Dummy for skygw_log_rotate.
Fixed compilation errors due to declaring variables after a goto command.
MAX-325, Log rotation functionality. When skygw_log_rotate is called, corresponding logfile's rotate flag (lf_rotateflag) is set and log writer thread is woken up. Writer opens a new log file and closes the old one.
Merge branch 'develop' of https://github.com/mariadb-corporation/MaxScale into develop

Conflicts:
	log_manager/log_manager.cc
Fix for wrong default value

Fix for wrong default value
Added logging to log rotation and to filter session setup.
Merge branch 'develop' of https://github.com/mariadb-corporation/MaxScale into develop
Fixes to Coverity defects 72681, 72683, 72691.
Fix to Coverity defect 73387
Added a variable that controls the FAKE_CODE define
Fixes to Coverity defects:
72643
72645
72655
72656
72657
72658
72664
72698
72712
Fixes to Coverity defects 78241 78242 78243 78244 78245
Fix to Coverity defect 76134
Fix to Coverity defects 72714 75940 75941
Merge branch 'develop' into firewall
Fixed a bug in httpd.c