fix laundry list of bugs in content repository copy code.
duplicate version of the 11arg content_folder__new
copy_creation_ip rather than copy__creation_ip in content_revision__copy
content_folder__copy did not preserve context_id properly
content_item__copy2 had a bunch of unused varaibles -- removed them.
content_item__copy now preserves live_revision so things which copy an
item with a live revision to not have to explicitly publish the new copy
(which eg file storage did not do).
content_revision__copy did an insert into acs_objects without specifying
column names which breaks on a new install since the order is not as expected.
