Allow the libc++ build/source paths to contain symlinks.

The filesystem tests were expecting the paths to the build/source directories
did not contain any symlinks. This patch resolves those symlinks before running
the test suite.



git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@273323 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed