External Iterators for HashMap and HashSet#7277

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bluss wants to merge 5 commits intorust-lang:masterfrom

bluss:hashmap-iterator

Commits on Jun 21, 2013

std::hashmap: Implement external iterator for HashMap and HashSet
blake2-ppc
committed
std::hashmap: Add test_iterate for HashSet
blake2-ppc
committed
std::hashmap: Use .iter() instead of .each and similar
blake2-ppc
committed
std::hashmap: Remove BaseIter impl for HashSet
blake2-ppc
committed
std::to_str: Use .iter() for HashMap and HashSet
blake2-ppc
committed