std: Stabilize a number of new fs features

This commit stabilizes the following APIs, slating them all to be cherry-picked
into the 1.1 release.

* fs::FileType (and transitively the derived trait implementations)
* fs::Metadata::file_type
* fs::FileType::is_dir
* fs::FileType::is_file
* fs::FileType::is_symlink
* fs::DirEntry::metadata
* fs::DirEntry::file_type
* fs::DirEntry::file_name
* fs::set_permissions
* fs::symlink_metadata
* os::raw::{self, *}
* os::{android, bitrig, linux, ...}::raw::{self, *}
* os::{android, bitrig, linux, ...}::fs::MetadataExt
* os::{android, bitrig, linux, ...}::fs::MetadataExt::as_raw_stat
* os::unix::fs::PermissionsExt
* os::unix::fs::PermissionsExt::mode
* os::unix::fs::PermissionsExt::set_mode
* os::unix::fs::PermissionsExt::from_mode
* os::unix::fs::OpenOptionsExt
* os::unix::fs::OpenOptionsExt::mode
* os::unix::fs::DirEntryExt
* os::unix::fs::DirEntryExt::ino
* os::windows::fs::MetadataExt
* os::windows::fs::MetadataExt::file_attributes
* os::windows::fs::MetadataExt::creation_time
* os::windows::fs::MetadataExt::last_access_time
* os::windows::fs::MetadataExt::last_write_time
* os::windows::fs::MetadataExt::file_size

The `os::unix::fs::Metadata` structure was also removed entirely, moving all of
its associated methods into the `os::unix::fs::MetadataExt` trait instead. The
methods are all marked as `#[stable]` still.

As some minor cleanup, some deprecated and unstable fs apis were also removed:

* File::path
* Metadata::accessed
* Metadata::modified

Features that were explicitly left unstable include:

* fs::WalkDir - the semantics of this were not considered in the recent fs
  expansion RFC.
* fs::DirBuilder - it's still not 100% clear if the naming is right here and if
  the set of functionality exposed is appropriate.
* fs::canonicalize - the implementation on Windows here is specifically in
  question as it always returns a verbatim path. Additionally the Unix
  implementation is susceptible to buffer overflows on long paths unfortunately.
* fs::PathExt - as this is just a convenience trait, it is not stabilized at
  this time.
* fs::set_file_times - this funciton is still waiting on a time abstraction.

1 files changed, 33 insertions, 8 deletions

diff --git a/src/libstd/os/macos/raw.rs b/src/libstd/os/macos/raw.rs
index 03fcb768c11..dbc1b8c726b 100644
--- a/src/libstd/os/macos/raw.rs
+++ b/src/libstd/os/macos/raw.rs
@@ -10,40 +10,65 @@
 
 //! MacOS-specific raw type definitions
 
+#![stable(feature = "raw_ext", since = "1.1.0")]
+
 use os::raw::c_long;
 use os::unix::raw::{uid_t, gid_t};
 
-pub type blkcnt_t = i64;
-pub type blksize_t = i32;
-pub type dev_t = i32;
-pub type ino_t = u64;
-pub type mode_t = u16;
-pub type nlink_t = u16;
-pub type off_t = i64;
-pub type time_t = c_long;
+#[stable(feature = "raw_ext", since = "1.1.0")] pub type blkcnt_t = i64;
+#[stable(feature = "raw_ext", since = "1.1.0")] pub type blksize_t = i32;
+#[stable(feature = "raw_ext", since = "1.1.0")] pub type dev_t = i32;
+#[stable(feature = "raw_ext", since = "1.1.0")] pub type ino_t = u64;
+#[stable(feature = "raw_ext", since = "1.1.0")] pub type mode_t = u16;
+#[stable(feature = "raw_ext", since = "1.1.0")] pub type nlink_t = u16;
+#[stable(feature = "raw_ext", since = "1.1.0")] pub type off_t = i64;
+#[stable(feature = "raw_ext", since = "1.1.0")] pub type time_t = c_long;
 
 #[repr(C)]
+#[stable(feature = "raw_ext", since = "1.1.0")]
 pub struct stat {
+    #[stable(feature = "raw_ext", since = "1.1.0")]
     pub st_dev: dev_t,
+    #[stable(feature = "raw_ext", since = "1.1.0")]
     pub st_mode: mode_t,
+    #[stable(feature = "raw_ext", since = "1.1.0")]
     pub st_nlink: nlink_t,
+    #[stable(feature = "raw_ext", since = "1.1.0")]
     pub st_ino: ino_t,
+    #[stable(feature = "raw_ext", since = "1.1.0")]
     pub st_uid: uid_t,
+    #[stable(feature = "raw_ext", since = "1.1.0")]
     pub st_gid: gid_t,
+    #[stable(feature = "raw_ext", since = "1.1.0")]
     pub st_rdev: dev_t,
+    #[stable(feature = "raw_ext", since = "1.1.0")]
     pub st_atime: time_t,
+    #[stable(feature = "raw_ext", since = "1.1.0")]
     pub st_atime_nsec: c_long,
+    #[stable(feature = "raw_ext", since = "1.1.0")]
     pub st_mtime: time_t,
+    #[stable(feature = "raw_ext", since = "1.1.0")]
     pub st_mtime_nsec: c_long,
+    #[stable(feature = "raw_ext", since = "1.1.0")]
     pub st_ctime: time_t,
+    #[stable(feature = "raw_ext", since = "1.1.0")]
     pub st_ctime_nsec: c_long,
+    #[stable(feature = "raw_ext", since = "1.1.0")]
     pub st_birthtime: time_t,
+    #[stable(feature = "raw_ext", since = "1.1.0")]
     pub st_birthtime_nsec: c_long,
+    #[stable(feature = "raw_ext", since = "1.1.0")]
     pub st_size: off_t,
+    #[stable(feature = "raw_ext", since = "1.1.0")]
     pub st_blocks: blkcnt_t,
+    #[stable(feature = "raw_ext", since = "1.1.0")]
     pub st_blksize: blksize_t,
+    #[stable(feature = "raw_ext", since = "1.1.0")]
     pub st_flags: u32,
+    #[stable(feature = "raw_ext", since = "1.1.0")]
     pub st_gen: u32,
+    #[stable(feature = "raw_ext", since = "1.1.0")]
     pub st_lspare: i32,
+    #[stable(feature = "raw_ext", since = "1.1.0")]
     pub st_qspare: [i64; 2],
 }