"load data infile .." allowed for access to
unautohorized tables.
Due to a faulty if-statement it was possible to
circumvent the secure_file_priv restriction.
mysql-test/mysql-test-run.pl:
* Add SECURE_LOAD_PATH environment variable to mtr test cases.
mysql-test/suite/sys_vars/r/secure_file_priv2.result:
* add test for bug58747
mysql-test/suite/sys_vars/t/secure_file_priv2-master.opt:
* add test for bug58747
mysql-test/suite/sys_vars/t/secure_file_priv2.test:
* add test for bug58747
sql/sql_load.cc:
* Correct faulty if-statement
* fix indentation
* move my_stat() block to after is_secure_file_path() check.
