hier field makes use of the hier API by extending it and referencing it from a
cck field.

contains said class.

can avoid having to futz with setting up form submit and validate hooks.

	- refactored API code in hier.module
	- debugging, optimization on menu code
	- Better "you are here" / context handling ( still needs work!)
	- removed "name" from hier table, moved to hid-keyed hier_path table ( which now contains an enumerated path listing )