Merge e1651c9d8b3c78728fc5ad82c15eb3ef4a9f34fa into 23241717bf91c4317065828bedafd05ebb97c1ef

MinGWs `ws2tcpip.h` already defines `socklen_t`, making this redundant.
What's more, in a recent version of MinGW this has changed to `unsigned int`, breaking compatibility.

docs/ltn12.html

@@ -40,7 +40,7 @@ Pump, Support, Library">
 <h2 id="ltn12">LTN12</h2>
 
 <p> The <tt>ltn12</tt> namespace implements the ideas described in
-<a href="http://lua-users.org/wiki/FiltersSourcesAndSinks">
+<a href="https://github.com/lunarmodules/luasocket/blob/master/ltn012.md">
 LTN012, Filters sources and sinks</a>. This manual simply describes the
 functions. Please refer to the LTN for a deeper explanation of the
 functionality provided by this module.

docs/socket.html

@@ -164,6 +164,9 @@ Creates and returns a <em>clean</em>
 <a href="#try"><tt>try</tt></a>
 function that allows for cleanup before the exception
 is  raised.
+This implements the ideas described in
+<a href="https://github.com/lunarmodules/luasocket/blob/master/ltn013.md">
+LTN012, Using finalized exceptions</a>.
 </p>
 
 <p class="parameters">
@@ -207,6 +210,9 @@ Converts a function that throws exceptions into a safe function. This
 function only catches exceptions thrown by the <a href="#try"><tt>try</tt></a>
 and <a href="#newtry"><tt>newtry</tt></a> functions. It does not catch normal
 Lua errors.
+This implements the ideas described in
+<a href="https://github.com/lunarmodules/luasocket/blob/master/ltn013.md">
+LTN012, Using finalized exceptions</a>.
 </p>
 
 <p class="parameters">
@@ -425,6 +431,9 @@ socket.<b>try(</b>ret<sub>1</sub> [, ret<sub>2</sub> ... ret<sub>N</sub>]<b>)</b
 Throws an exception in case <tt>ret<sub>1</sub></tt> is falsy, using
 <tt>ret<sub>2</sub></tt> as the error message. The exception is supposed to be caught
 by a <a href="#protect"><tt>protect</tt></a>ed function only.
+This implements the ideas described in
+<a href="https://github.com/lunarmodules/luasocket/blob/master/ltn013.md">
+LTN012, Using finalized exceptions</a>.
 </p>
 
 <p class="parameters">

src/wsocket.h

@@ -11,7 +11,6 @@
 #include <winsock2.h>
 #include <ws2tcpip.h>
 
-typedef int socklen_t;
 typedef SOCKADDR_STORAGE t_sockaddr_storage;
 typedef SOCKET t_socket;
 typedef t_socket *p_socket;