std: Deprecate a number of unstable features

Many of these have long since reached their stage of being obsolete, so this
commit starts the removal process for all of them. The unstable features that
were deprecated are:

* cmp_partial
* fs_time
* hash_default
* int_slice
* iter_min_max
* iter_reset_fuse
* iter_to_vec
* map_in_place
* move_from
* owned_ascii_ext
* page_size
* read_and_zero
* scan_state
* slice_chars
* slice_position_elem
* subslice_offset

1 files changed, 2 insertions, 0 deletions

diff --git a/src/libstd/env.rs b/src/libstd/env.rs
index 6842de56d21..d1a49da461e 100644
--- a/src/libstd/env.rs
+++ b/src/libstd/env.rs
@@ -590,6 +590,8 @@ impl ExactSizeIterator for ArgsOs {
 
 /// Returns the page size of the current architecture in bytes.
 #[unstable(feature = "page_size", reason = "naming and/or location may change")]
+#[deprecated(since = "1.3.0",
+             reason = "hasn't seen enough usage to justify inclusion")]
 pub fn page_size() -> usize {
     os_imp::page_size()
 }