fixes #286 nng_pair0_open (and all others) need man page

fixes #279 consider restructuring man sections

This represents a rather significant rework, and major editing
effort, for the entire set of manual pages.

All of the pages now have a section number in their filename;
this assists in some other tooling, particularly ebook generation
as every link needs to be programmatically modified when combined
into an ebook.

Section 5 is introduced, and populated with pages for the main
types, and all options are now documented.

Numerous errors have been corrected, including rewriting certain
portions such as the header section of the surveyor protocol.

Much work has been done to facilitate index generation, although
certainly more work remains here.

Every internal link within these pages now resolves; there are no
more dead links.  (This is required to generate Kindle format books.)

1 files changed, 0 insertions, 96 deletions

diff --git a/docs/man/nng_http_client_connect.adoc b/docs/man/nng_http_client_connect.adoc
deleted file mode 100644
index f5fef4eb..00000000
--- a/docs/man/nng_http_client_connect.adoc
+++ /dev/null
@@ -1,96 +0,0 @@
-= nng_http_client_connect(3)
-//
-// Copyright 2018 Staysail Systems, Inc. <info@staysail.tech>
-// Copyright 2018 Capitar IT Group BV <info@capitar.com>
-//
-// This document is supplied under the terms of the MIT License, a
-// copy of which should be located in the distribution where this
-// file was obtained (LICENSE.txt).  A copy of the license may also be
-// found online at https://opensource.org/licenses/MIT.
-//
-
-== NAME
-
-nng_http_client_connect - establish HTTP client connection
-
-== SYNOPSIS
-
-[source, c]
------------
-#include <nng/nng.h>
-#include <nng/supplemental/http/http.h>
-
-void nng_http_client_connect(nng_http_client *client, nng_aio *aio);
------------
-
-== DESCRIPTION
-
-The `nng_http_client_connect()` starts the process of establishing an HTTP
-connection from _client_ to the server that was indicated in the URL that
-_client_ was configured with.
-
-The result of the operation will be stored in the _aio_ when the operation
-is complete, and will be obtainable via
-<<nng_aio_result#,nng_aio_result(3)>>.
-
-On success, a pointer to the underlying HTTP client (type `nng_http_conn *`)
-will be stored in the first output result of the _aio_, and can be
-obtained by
-<<nng_aio_get_output#,nng_aio_get_output(3)>> with an _index_ of zero (0).
-
-== RETURN VALUES
-
-None.
-
-== ERRORS
-
-`NNG_EADDRINVAL`:: The server is configured with an invalid address.
-`NNG_ECANCELED`:: The operation was aborted.
-`NNG_ECONNREFUSED`:: The TCP connection was refused by the server.
-`NNG_ECONNRESET`:: The TCP connection was reset by the server.
-`NNG_ENOMEM`:: Insufficient free memory exists.
-
-== EXAMPLE
-
-[source, c]
-----
-    nng_aio *aio;
-    nng_url *url;
-    nng_http_client *client;
-    nng_http_conn *conn;
-    int rv;
-
-    // Error checks elided for clarity.
-    nng_url_parse(&url, "http://www.google.com");
-    nng_aio_alloc(&aio, NULL, NULL);
-    nng_http_client_alloc(&client, url);
-
-    nng_http_client_connect(client, aio);
-
-    // Wait for connection to establish (or attempt to fail).
-    nng_aio_wait(aio);
-
-    if ((rv = nng_aio_result(aio)) != 0) {
-            printf("Connection failed: %s\n", nng_strerror(rv));
-    } else {
-            // Connection established, get it.
-            conn = nng_aio_get_output(aio, 0);
-
-            // ... do something with it here
-
-            // Close the connection when done to avoid leaking it.
-            nng_http_conn_close(conn);
-    }
-----
-
-== SEE ALSO
-
-<<nng_aio_get_output#,nng_aio_get_output(3)>>,
-<<nng_aio_result#,nng_aio_result(3)>>,
-<<nng_aio_wait#,nng_aio_wait(3)>>,
-<<nng_http_client_alloc#,nng_http_client_alloc(3)>>,
-<<nng_http_conn_close#,nng_http_conn_close(3)>>,
-<<nng_http_conn_read#,nng_http_conn_read(3)>>,
-<<nng_http_conn_write#,nng_http_conn_write(3)>>,
-<<nng_strerror#,nng_strerror(3)>>,
-<<nng#,nng(7)>>