Fix autolinking when modules are imported in pch files

Add the ImportDecl to the set of interesting delcarations that are
deserialized eagerly when an AST file is loaded (rather than lazily like
most decls). This is required to get auto linking to work when there is
no explicit import in the main file. Also resolve a FIXME to rename
'ExternalDefinitions', since that is only one of the things that need eager
deserialization. The new name is 'EagerlyDeserializedDecls'. The corresponding
AST bitcode is also renamed.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@200505 91177308-0d34-0410-b5e6-96231b3b80d8
Driver: Don't use DOS style paths on UNIX

We'd add, as a fallback, DOS style paths when using the driver using a
win32 triple.  On a UNIX-like platform, this isn't particularly helpful.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@200507 91177308-0d34-0410-b5e6-96231b3b80d8
libclang/Makefile: Reorder libraries.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@200508 91177308-0d34-0410-b5e6-96231b3b80d8