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, 122 deletions

diff --git a/docs/man/nng_http_res_set_status.adoc b/docs/man/nng_http_res_set_status.adoc
deleted file mode 100644
index f5e45cc4..00000000
--- a/docs/man/nng_http_res_set_status.adoc
+++ /dev/null
@@ -1,122 +0,0 @@
-= nng_http_res_set_status(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_res_set_status - set HTTP response status
-
-== SYNOPSIS
-
-[source, c]
------------
-#include <nng/nng.h>
-#include <nng/supplemental/http/http.h>
-
-int nng_http_res_set_status(nng_http_res *res, uint16_t status);
------------
-
-== DESCRIPTION
-
-The `nng_http_res_set_status()` sets the numeric HTTP status code
-associated with the response _res_ to _status_.   The default value
-for a newly allocated response is 200 (`NNG_HTTP_STATUS_OK`).
-
-The _status_ is not verified, so the caller should take care to ensure
-that only a valid code is supplied.
-
-For convenience, a number of predefined symbols are available.
-
-[source, c]
-----
-enum {
-    NNG_HTTP_STATUS_CONTINUE                 = 100,
-    NNG_HTTP_STATUS_SWITCHING                = 101,
-    NNG_HTTP_STATUS_PROCESSING               = 102,
-    NNG_HTTP_STATUS_OK                       = 200,
-    NNG_HTTP_STATUS_CREATED                  = 201,
-    NNG_HTTP_STATUS_ACCEPTED                 = 202,
-    NNG_HTTP_STATUS_NOT_AUTHORITATIVE        = 203,
-    NNG_HTTP_STATUS_NO_CONTENT               = 204,
-    NNG_HTTP_STATUS_RESET_CONTENT            = 205,
-    NNG_HTTP_STATUS_PARTIAL_CONTENT          = 206,
-    NNG_HTTP_STATUS_MULTI_STATUS             = 207,
-    NNG_HTTP_STATUS_ALREADY_REPORTED         = 208,
-    NNG_HTTP_STATUS_IM_USED                  = 226,
-    NNG_HTTP_STATUS_MULTIPLE_CHOICES         = 300,
-    NNG_HTTP_STATUS_STATUS_MOVED_PERMANENTLY = 301,
-    NNG_HTTP_STATUS_FOUND                    = 302,
-    NNG_HTTP_STATUS_SEE_OTHER                = 303,
-    NNG_HTTP_STATUS_NOT_MODIFIED             = 304,
-    NNG_HTTP_STATUS_USE_PROXY                = 305,
-    NNG_HTTP_STATUS_TEMPORARY_REDIRECT       = 307,
-    NNG_HTTP_STATUS_PERMANENT_REDIRECT       = 308,
-    NNG_HTTP_STATUS_BAD_REQUEST              = 400,
-    NNG_HTTP_STATUS_UNAUTHORIZED             = 401,
-    NNG_HTTP_STATUS_PAYMENT_REQUIRED         = 402,
-    NNG_HTTP_STATUS_FORBIDDEN                = 403,
-    NNG_HTTP_STATUS_NOT_FOUND                = 404,
-    NNG_HTTP_STATUS_METHOD_NOT_ALLOWED       = 405,
-    NNG_HTTP_STATUS_NOT_ACCEPTABLE           = 406,
-    NNG_HTTP_STATUS_PROXY_AUTH_REQUIRED      = 407,
-    NNG_HTTP_STATUS_REQUEST_TIMEOUT          = 408,
-    NNG_HTTP_STATUS_CONFLICT                 = 409,
-    NNG_HTTP_STATUS_GONE                     = 410,
-    NNG_HTTP_STATUS_LENGTH_REQUIRED          = 411,
-    NNG_HTTP_STATUS_PRECONDITION_FAILED      = 412,
-    NNG_HTTP_STATUS_PAYLOAD_TOO_LARGE        = 413,
-    NNG_HTTP_STATUS_ENTITY_TOO_LONG          = 414,
-    NNG_HTTP_STATUS_UNSUPPORTED_MEDIA_TYPE   = 415,
-    NNG_HTTP_STATUS_RANGE_NOT_SATISFIABLE    = 416,
-    NNG_HTTP_STATUS_EXPECTATION_FAILED       = 417,
-    NNG_HTTP_STATUS_TEAPOT                   = 418,
-    NNG_HTTP_STATUS_UNPROCESSABLE_ENTITY     = 422,
-    NNG_HTTP_STATUS_LOCKED                   = 423,
-    NNG_HTTP_STATUS_FAILED_DEPENDENCY        = 424,
-    NNG_HTTP_STATUS_UPGRADE_REQUIRED         = 426,
-    NNG_HTTP_STATUS_PRECONDITION_REQUIRED    = 428,
-    NNG_HTTP_STATUS_TOO_MANY_REQUESTS        = 429,
-    NNG_HTTP_STATUS_HEADERS_TOO_LARGE        = 431,
-    NNG_HTTP_STATUS_UNAVAIL_LEGAL_REASONS    = 451,
-    NNG_HTTP_STATUS_INTERNAL_SERVER_ERROR    = 500,
-    NNG_HTTP_STATUS_NOT_IMPLEMENTED          = 501,
-    NNG_HTTP_STATUS_BAD_GATEWAY              = 502,
-    NNG_HTTP_STATUS_SERVICE_UNAVAILABLE      = 503,
-    NNG_HTTP_STATUS_GATEWAY_TIMEOUT          = 504,
-    NNG_HTTP_STATUS_HTTP_VERSION_NOT_SUPP    = 505,
-    NNG_HTTP_STATUS_VARIANT_ALSO_NEGOTIATES  = 506,
-    NNG_HTTP_STATUS_INSUFFICIENT_STORAGE     = 507,
-    NNG_HTTP_STATUS_LOOP_DETECTED            = 508,
-    NNG_HTTP_STATUS_NOT_EXTENDED             = 510,
-    NNG_HTTP_STATUS_NETWORK_AUTH_REQUIRED    = 511, 
-}       
-----
-
-Please see the relevant HTTP RFCs for the semantics and correct
-use of these status codes.
-
-TIP: It is a good idea to also set the "reason phrase" with
-<<nng_http_res_set_reason#,nng_http_set_reason(3)>>.  This 
-will help any humans who may have to diagnose any failure.
-
-== RETURN VALUES
-
-This function returns 0 on success, and non-zero otherwise.
-
-== ERRORS
-
-`NNG_ENOTSUP`:: No support for HTTP in the library.
-
-== SEE ALSO
-
-<<nng_http_res_alloc#,nng_http_res_alloc(3)>>,
-<<nng_http_res_get_status#,nng_http_req_get_status(3)>>,
-<<nng_http_res_set_reason#,nng_http_req_set_reason(3)>>,
-<<nng#,nng(7)>>