Auto merge of #22873 - alexcrichton:deprecate-fs, r=aturon

This commit deprecates the majority of std::old_io::fs in favor of std::fs and
its new functionality. Some functions remain non-deprecated but are now behind a
feature gate called `old_fs`. These functions will be deprecated once
suitable replacements have been implemented.

The compiler has been migrated to new `std::fs` and `std::path` APIs where
appropriate as part of this change.

[breaking-change]

3 files changed, 3 insertions, 1 deletions

diff --git a/src/libstd/sys/unix/ext.rs b/src/libstd/sys/unix/ext.rs
index 3f9da6e3c51..45042d6f032 100644
--- a/src/libstd/sys/unix/ext.rs
+++ b/src/libstd/sys/unix/ext.rs
@@ -54,6 +54,7 @@ pub trait AsRawFd {
     fn as_raw_fd(&self) -> Fd;
 }
 
+#[allow(deprecated)]
 impl AsRawFd for old_io::fs::File {
     fn as_raw_fd(&self) -> Fd {
         self.as_inner().fd()
diff --git a/src/libstd/sys/windows/ext.rs b/src/libstd/sys/windows/ext.rs
index ac1006e653f..df18b404f5f 100644
--- a/src/libstd/sys/windows/ext.rs
+++ b/src/libstd/sys/windows/ext.rs
@@ -39,6 +39,7 @@ pub trait AsRawHandle {
     fn as_raw_handle(&self) -> Handle;
 }
 
+#[allow(deprecated)]
 impl AsRawHandle for old_io::fs::File {
     fn as_raw_handle(&self) -> Handle {
         self.as_inner().handle()
diff --git a/src/libstd/sys/windows/process.rs b/src/libstd/sys/windows/process.rs
index 334cafd3eb1..53a037ef07e 100644
--- a/src/libstd/sys/windows/process.rs
+++ b/src/libstd/sys/windows/process.rs
@@ -17,7 +17,7 @@ use hash::Hash;
 use libc::{pid_t, c_void};
 use libc;
 use mem;
-use old_io::fs::PathExtensions;
+#[allow(deprecated)] use old_io::fs::PathExtensions;
 use old_io::process::{ProcessExit, ExitStatus};
 use old_io::{IoResult, IoError};
 use old_io;