This patch was created by Lawrence Crowl and reviewed in:
http://llvm-reviews.chandlerc.com/D963

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headers may be included from within the module, but not from outside
the module.



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 - There is no reason to have a modules specific flag for disabling
   autolinking. Instead, convert the existing flag into -fno-autolink (which
   should cover other autolinking code generation paths like #pragmas if and
   when we support them).

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<rdar://problem/13509689> Introduce -module-file-info option that provides information about a particular module file.

This option can be useful for end users who want to know why they
ended up with a ton of different variants of the "std" module in their
module cache. This problem should go away over time, as we reduce the
need for module variants, but it will never go away entirely.



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More modules documentation, including the straw-man import declaration syntax and "how to modularize a platform".


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And ask for people to try it out and send us bug reports!

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