TTSD-12813

If reopening the model during multi-user save fails, Tekla Structures closes the model and correctly releases the multi-user lock.
An advanced option, XS_MULTIUSER_SAVE_REOPEN_DISABLE_COMPACTION, can be now added to the user.ini file to disable the compaction during multi-user save. Users that frequently get the error "The command could not be completed, restart Tekla Structures and try again", can set XS_MULTIUSER_SAVE_REOPEN_DISABLE_COMPACTION to TRUE to help prevent the error.