Author: Petr Škoda
MDL-36602 support mnethostid in user csv upload tool
Remote users can not be created, updated or deleted. The only allowed operations are suspending, enrolling and adding to cohort or group.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=9dcae46d93676e1830ae38b96595c44647599647
http://github.com/moodle/moodle/commit/9dcae46d93676e1830ae38b96595c44647599647
+ 2.5 en [errormnetadd,tool_uploaduser]