Document attribute target multiversioning.

Description

Document attribute target multiversioning.

Add attribute target multiversioning to the release notes.
Additionally adds multiversioning support to the attribute
documentation for 'target'.

Differential Revision: https://reviews.llvm.org/D41837

Details

Committed
erichkeaneJan 8 2018, 3:36 PM
Differential Revision
D41837: Add Function multiversion to the release notes.
Parents
rL322042: [ELF] Small grammar fix. NFC
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