ndunand/moodle-tool_mergeusers — pull request #40 by jpahullo (2014-04-30 21:54:18+00:00)
Title: moodle-tool_mergeusers - #29 - supporting merging only if transactions are allowed.

Related to issue #39:

* Added setting to prevent from merging users if database does not support
transactions.
* Added tricky way on MergeUserTool to get whether transactions are supported
on curretn $DB object. See code for comments.