[lib] containers-0.7, now working on beta (and soon stable)!

Containers is a library of container types: Vec, HashTable, BTree, Heap, and RawVec.
Unlike libstd, it returns allocational failure to the caller, who can figure out what to do about it. (It may, however, eat your laundry.)

It now (since version 0.7.0) has a "stable-rust" feature which enables building on stable rust. (It is a feature rather than automatic so we can use intrinsics rather than libc functions when possible — this is only in the default definition of Alloc::oom, so if you never call it, you needn't care.)


P.S. This was formerly part of libreal, for those who remember that announcement.

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