End stdlib module summaries with a full stop.

Fixes #9447

src/libcollections/str.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! Unicode string slices
+//! Unicode string slices.
 //!
 //! *[See also the `str` primitive type](../primitive.str.html).*
 

src/libcore/clone.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! The `Clone` trait for types that cannot be 'implicitly copied'
+//! The `Clone` trait for types that cannot be 'implicitly copied'.
 //!
 //! In Rust, some simple types are "implicitly copyable" and when you
 //! assign them or pass them as arguments, the receiver will get a copy,

src/libcore/fmt/mod.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! Utilities for formatting and printing strings
+//! Utilities for formatting and printing strings.
 
 #![stable(feature = "rust1", since = "1.0.0")]
 

src/libcore/iter.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! Composable external iteration
+//! Composable external iteration.
 //!
 //! If you've found yourself with a collection of some kind, and needed to
 //! perform an operation on the elements of said collection, you'll quickly run

src/libcore/mem.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! Basic functions for dealing with memory
+//! Basic functions for dealing with memory.
 //!
 //! This module contains functions for querying the size and alignment of
 //! types, initializing and manipulating memory.

src/libcore/ops.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! Overloadable operators
+//! Overloadable operators.
 //!
 //! Implementing these traits allows you to get an effect similar to
 //! overloading operators.

src/libcore/option.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! Optional values
+//! Optional values.
 //!
 //! Type `Option` represents an optional value: every `Option`
 //! is either `Some` and contains a value, or `None`, and

src/libcore/ptr.rs

@@ -10,7 +10,7 @@
 
 // FIXME: talk about offset, copy_memory, copy_nonoverlapping_memory
 
-//! Raw, unsafe pointers, `*const T`, and `*mut T`
+//! Raw, unsafe pointers, `*const T`, and `*mut T`.
 //!
 //! *[See also the pointer primitive types](../../std/primitive.pointer.html).*
 

src/libcore/result.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! Error handling with the `Result` type
+//! Error handling with the `Result` type.
 //!
 //! `Result<T, E>` is the type used for returning and propagating
 //! errors. It is an enum with the variants, `Ok(T)`, representing

src/libstd/ascii.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! Operations on ASCII strings and characters
+//! Operations on ASCII strings and characters.
 
 #![stable(feature = "rust1", since = "1.0.0")]
 

src/libstd/fs.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! Filesystem manipulation operations
+//! Filesystem manipulation operations.
 //!
 //! This module contains basic methods to manipulate the contents of the local
 //! filesystem. All methods in this module represent cross-platform filesystem

src/libstd/os/mod.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! OS-specific functionality
+//! OS-specific functionality.
 
 #![stable(feature = "os", since = "1.0.0")]
 #![allow(missing_docs, bad_style)]

src/libstd/prelude/mod.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! The Rust Prelude
+//! The Rust Prelude.
 //!
 //! Rust comes with a variety of things in its standard library. However, if
 //! you had to manually import every single thing that you used, it would be

src/libstd/sync/mod.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! Useful synchronization primitives
+//! Useful synchronization primitives.
 //!
 //! This module contains useful safe and unsafe synchronization primitives.
 //! Most of the primitives in this module do not provide any sort of locking

src/libstd/thread/mod.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! Native threads
+//! Native threads.
 //!
 //! ## The threading model
 //!