#371892 by Dave Reid, deekayen, drewish: Generate content pretends to work even when no content types available.

Let generated comments have a random timestamp that is later than the node to which they are attached. This can cause dangerous paradox where a comment reply is older than its parent. Hopefully we avoid unravelling the fabric the space time continuum which would  destroy the entire universe.

further cleanup of bulk node generation. modules may now participate using standard hook_form_alter() and hook_nodapi(). See devel_generate_nodeapi() for an example. content_field('presave') is another example.

rework devel_generate so that modules can cleanly form_alter themselves into the creation process. i have not changed comment, taxonomy, and upload to work like that yet. i will do so, and then add OG functionality so that group posts get properly affiliated with group nodes.

add some initial code so cck field modules can participate in devel_generate. see #187599. patch by moshe weitzman.

you may now generate nodes only of specified types ...  content deletion is slower now but more proper. we only delete nodes from the specified types.

terms on nodes now respect their vocab's multiple property, and requried property ... empty nodequeue if that module is installed and we are killing content.

major update for devel_generate module. lots of stuff like comment threading was busted. further, we were attaching taxonomy terms to nodes in the wrong place (outside of node_save()). all is working ok in my tests except for the main block of links on /admin. for some reason, that isn't showing up.

#150505 Port devel_generate to 6.x. patch by Rok. not perfect, but close enough. see issue for details.

some minor bugs (missing table prefixing, for() off-by-1 error,
missing format_plural(), unnecessary update to {sequences}, etc).