[PCH] In ASTReader::completeVisibleDeclsMap, after we loaded all visible decls, mark the declaration context as not having external visible storage any more.
[PCH] In ASTReader::completeVisibleDeclsMap, after we loaded all visible decls, mark
the declaration context as not having external visible storage any more.

This should improve performance as we won't needlessly reload the visible decls multiple times
and seems to fix the i386 crash in rdar://11327522.

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@155649 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang