Merge beta-accepted into beta#33407

Merged

brson merged 13 commits intorust-lang:betafrom

alexcrichton:beta-next

May 4, 2016

Commits on May 4, 2016

Detect duplicate glob imports arising from glob cycles

jseyfried
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alexcrichton
committed
Add test

jseyfried
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alexcrichton
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Add comments

jseyfried
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alexcrichton
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Add regression test for #32797 (fixes #32797)

jseyfried
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alexcrichton
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Release notes for 1.9

brson
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alexcrichton
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Make data-layout mandatory in target specs.

eddyb
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alexcrichton
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Parse data-layout specifications.

eddyb
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alexcrichton
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Compute LLVM-agnostic type layouts in rustc.

eddyb
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alexcrichton
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Guard against rustc::layout diverging from rustc_trans.

eddyb
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alexcrichton
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Check transmutes between types without statically known sizes.

eddyb
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alexcrichton
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trans: always register an item's symbol, even if duplicated.

eddyb
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alexcrichton
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resolve: improve performance

jseyfried
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alexcrichton
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Bump beta version to 2
alexcrichton
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