#839770 by moshe weitzman. Notice: Undefined property: stdClass:: in forum_node_presave() when generating forum nodes.

Inherit default settings for promote, sticky, status, status from content type configuration. Already done in D7.

Record correct uid in node_revisions table. We rarely want the currently logged in user, which is what Drupal assumes.

#753284 by mikeryan: Basic implementation of sourceOfRecord==DESTINATION handling, backported from D7

Make smart timestamp handling more general, use in node migration; clear node cache to avoid out-of-memory errors