Feeds hierarchical taxonomy

Adds hierarchical taxonomy support to feeds.

Import nodes with taxonomies such as Clothes > Children > Blue and automatically create terms as a hierarchical taxonomy tree.

The terms are expected to present as an array; use a module such as Feeds Tamper to explode a string such as Clothes > Children > Blue or Clothes,Children,Blue into an array structure. You can also achieve this through a custom feeds parser, or hook_feeds_after_parse().