Jordan Rose 9ddf57f7ba Don't treat missing imports as a fatal error in REPL mode. ...

We don't want typos in import statements to take down the whole REPL, but we
/do/ want the REPL to be honoring fatal errors that effectively take down the
ASTContext.

This doesn't (yet) apply to the real LLDB REPL, which does not use
SourceFileKind::REPL for its input. The right option to test there is
LangOpts.DebuggerSupport, but that's currently being set for Playgrounds as
well. I've filed <rdar://problem/18090611> for LLDB to adjust their input.

Part of <rdar://problem/17994094>

Swift SVN r21383

2014-08-21 22:36:22 +00:00

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