Type resolution
fixed issue importing std
Store all context from rustc in TLS
implemented jsonification for generics; enums too
Unified JSON output for the crate, and merge all the tests into a crate
Use Clean and ToJson for the crate
still trying for enum attributes
docs for functions (no body yet); type improvements
Enum variants shouldn't have id's (they can't be used as a type)
wip new visitor
Merge branch 'wip' of https://github.com/cmr/rustdoc_ng

Conflicts:
	clean.rs
	doctree.rs
	jsonify.rs
	main.rs
	tests/basic_enum.rs
	tests/basic_struct.rs
	tests/extern.rs
	visit.rs