[VirtualFileSystem] Support virtual working directory in the RedirectingFS#11

Merged

JDevlieghere merged 9 commits intoswiftlang:apple/stable/20190619from

JDevlieghere:cherrypick/virtualfilesystem

Oct 28, 2019

Commits on Oct 21, 2019

[VFS] Add reverse iterator to OverlayFileSystem
JDevlieghere
committed
[VirtualFileSystem] Support virtual working directory in the RedirectingFS
JDevlieghere
committed
[test] Update YAML mapping in VirtualFileSystemTest
JDevlieghere
committed
Revert "[VirtualFileSystem] Support virtual working directory in the RedirectingFS"
JDevlieghere
committed
[Reland][VirtualFileSystem] Support virtual working directory in the RedirectingFS
JDevlieghere
committed
Fix an unused variable introduced in rL374955 / rG21703543.

dlj-NaN
authored and
JDevlieghere
committed
RedirectingFileSystem::openFileForRead - replace bitwise & with boolean && to fix warning

RKSimon
authored and
JDevlieghere
committed
VirtualFileSystem - replace dyn_cast<>+assert with cast<> calls. NFCI.

RKSimon
authored and
JDevlieghere
committed
[Path] Fix bug in make_absolute logic
JDevlieghere
committed