Update the Clang attribute emitter to handle attributes of 'version' kind, and fix serialization/deserialization of IdentifierInfo attributes. These are requires for the new 'availability' attribute.
Update the Clang attribute emitter to handle attributes of 'version'
kind, and fix serialization/deserialization of IdentifierInfo
attributes. These are requires for the new 'availability' attribute.


git-svn-id: a4a6f32337ebd29ad4763b423022f00f68d1c7b7@128130 91177308-0d34-0410-b5e6-96231b3b80d8

lodyagin/bare_cxx,lodyagin/bare_cxx,lodyagin/bare_cxx,lodyagin/bare_cxx,lodyagin/bare_cxx