commit f1471a367b35d1d1fa4fff374b771ecf2671fb34
author Eric Fiselier <eric@efcs.ca> Mon Mar 26 05:46:57 2018 +0000
committer Eric Fiselier <eric@efcs.ca> Mon Mar 26 05:46:57 2018 +0000
tree 0f5bce36b7db636ca9ee502ed071ce43210fe3aa
parent 85e9de93e25a31a4e8ddfeb5cd7d255bb83749ac

Make filesystem tests generic between experimental and std versions.

As I move towards implementing std::filesystem, there is a need to
make the existing tests run against both the std and experimental versions.
Additionally, it's helpful to allow running the tests against other
implementations of filesystem.

This patch converts the test to easily target either. First, it
adds a filesystem_include.hpp header which is soley responsible
for selecting and including the correct implementation. Second,
it converts existing tests to use this header instead of including
filesystem directly.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@328475 91177308-0d34-0410-b5e6-96231b3b80d8