| Log Message: |
make addCourse, deleteCourse more robust.
- pre-check permissions before trying to mkdir/rmtree
- treat creation errors on directories other than the root as warnings
- treat deletion errors on all directories as warnings
- treat sql_single "drop table" errors as warnings
- supress DBI's error reporting for command-line addcourse/delcourse
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branches/rel-2-2-dev/webwork-modperl/lib/WeBWorK/Utils/CourseManagement/sql_single.pm