Auto merge of #29254 - alexcrichton:stabilize-1.5, r=brson

This commit stabilizes and deprecates library APIs whose FCP has closed in the
last cycle, specifically:

Stabilized APIs:

* `fs::canonicalize`
* `Path::{metadata, symlink_metadata, canonicalize, read_link, read_dir, exists,
   is_file, is_dir}` - all moved to inherent methods from the `PathExt` trait.
* `Formatter::fill`
* `Formatter::width`
* `Formatter::precision`
* `Formatter::sign_plus`
* `Formatter::sign_minus`
* `Formatter::alternate`
* `Formatter::sign_aware_zero_pad`
* `string::ParseError`
* `Utf8Error::valid_up_to`
* `Iterator::{cmp, partial_cmp, eq, ne, lt, le, gt, ge}`
* `<[T]>::split_{first,last}{,_mut}`
* `Condvar::wait_timeout` - note that `wait_timeout_ms` is not yet deprecated
  but will be once 1.5 is released.
* `str::{R,}MatchIndices`
* `str::{r,}match_indices`
* `char::from_u32_unchecked`
* `VecDeque::insert`
* `VecDeque::shrink_to_fit`
* `VecDeque::as_slices`
* `VecDeque::as_mut_slices`
* `VecDeque::swap_remove_front` - (renamed from `swap_front_remove`)
* `VecDeque::swap_remove_back` - (renamed from `swap_back_remove`)
* `Vec::resize`
* `str::slice_mut_unchecked`
* `FileTypeExt`
* `FileTypeExt::{is_block_device, is_char_device, is_fifo, is_socket}`
* `BinaryHeap::from` - `from_vec` deprecated in favor of this
* `BinaryHeap::into_vec` - plus a `Into` impl
* `BinaryHeap::into_sorted_vec`

Deprecated APIs

* `slice::ref_slice`
* `slice::mut_ref_slice`
* `iter::{range_inclusive, RangeInclusive}`
* `std::dynamic_lib`

Closes #27706
Closes #27725
cc #27726 (align not stabilized yet)
Closes #27734
Closes #27737
Closes #27742
Closes #27743
Closes #27772
Closes #27774
Closes #27777
Closes #27781
cc #27788 (a few remaining methods though)
Closes #27790
Closes #27793
Closes #27796
Closes #27810
cc #28147 (not all parts stabilized)

src/libstd/sys/common/unwind/mod.rs

@@ -81,12 +81,12 @@ use sys_common::mutex::Mutex;
 #[path = "seh.rs"] #[doc(hidden)]
 pub mod imp;
 
-// SNAP: i686-pc-windows-gnu
+// stage0: i686-pc-windows-gnu
 #[cfg(all(stage0, windows, target_arch = "x86_64", target_env = "gnu"))]
 #[path = "seh64_gnu.rs"] #[doc(hidden)]
 pub mod imp;
 
-// SNAP: x86_64-pc-windows-msvc
+// stage0: x86_64-pc-windows-msvc
 #[cfg(all(stage0, windows, target_arch = "x86_64", target_env = "msvc"))]
 #[path = "seh.rs"] #[doc(hidden)]
 pub mod imp;

src/libstd/sys/unix/ext/fs.rs

@@ -178,21 +178,23 @@ impl MetadataExt for fs::Metadata {
 }
 
 /// Add special unix types (block/char device, fifo and socket)
-#[unstable(feature = "file_type_ext", reason = "recently added API",
-           issue = "27796")]
+#[stable(feature = "file_type_ext", since = "1.5.0")]
 pub trait FileTypeExt {
     /// Returns whether this file type is a block device.
+    #[stable(feature = "file_type_ext", since = "1.5.0")]
     fn is_block_device(&self) -> bool;
     /// Returns whether this file type is a char device.
+    #[stable(feature = "file_type_ext", since = "1.5.0")]
     fn is_char_device(&self) -> bool;
     /// Returns whether this file type is a fifo.
+    #[stable(feature = "file_type_ext", since = "1.5.0")]
     fn is_fifo(&self) -> bool;
     /// Returns whether this file type is a socket.
+    #[stable(feature = "file_type_ext", since = "1.5.0")]
     fn is_socket(&self) -> bool;
 }
 
-#[unstable(feature = "file_type_ext", reason = "recently added API",
-           issue = "27796")]
+#[stable(feature = "file_type_ext", since = "1.5.0")]
 impl FileTypeExt for fs::FileType {
     fn is_block_device(&self) -> bool { self.as_inner().is(libc::S_IFBLK) }
     fn is_char_device(&self) -> bool { self.as_inner().is(libc::S_IFCHR) }

src/libstd/sys/unix/fs.rs

@@ -543,7 +543,7 @@ pub fn canonicalize(p: &Path) -> io::Result<PathBuf> {
 }
 
 pub fn copy(from: &Path, to: &Path) -> io::Result<u64> {
-    use fs::{File, PathExt, set_permissions};
+    use fs::{File, set_permissions};
     if !from.is_file() {
         return Err(Error::new(ErrorKind::InvalidInput,
                               "the source path is not an existing regular file"))

src/libstd/sys/unix/thread.rs

@@ -356,6 +356,7 @@ pub mod guard {
 // but that caused Debian to detect an unnecessarily strict versioned
 // dependency on libc6 (#23628).
 #[cfg(target_os = "linux")]
+#[allow(deprecated)]
 fn min_stack_size(attr: *const libc::pthread_attr_t) -> usize {
     use dynamic_lib::DynamicLibrary;
     use sync::Once;

src/libstd/sys/windows/backtrace.rs

@@ -22,7 +22,7 @@
 //! copy of that function in my mingw install (maybe it was broken?). Instead,
 //! this takes the route of using StackWalk64 in order to walk the stack.
 
-#![allow(dead_code)]
+#![allow(dead_code, deprecated)]
 
 use io::prelude::*;
 

src/libstd/sys/windows/printing/gnu.rs

@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![allow(deprecated)]
+
 use dynamic_lib::DynamicLibrary;
 use io;
 use io::prelude::*;

src/libstd/sys/windows/printing/msvc.rs

@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![allow(deprecated)]
+
 use sys_common::backtrace::{output, output_fileline};
 use ffi::CStr;
 use dynamic_lib::DynamicLibrary;