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, 60 deletions

diff --git a/docs/man/nng_http_req_copy_data.adoc b/docs/man/nng_http_req_copy_data.adoc
deleted file mode 100644
index 184eaaa5..00000000
--- a/docs/man/nng_http_req_copy_data.adoc
+++ /dev/null
@@ -1,60 +0,0 @@
-= nng_http_req_copy_data(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_req_copy_data - copy HTTP request body
-
-== SYNOPSIS
-
-[source, c]
------------
-#include <nng/nng.h>
-#include <nng/supplemental/http/http.h>
-
-int nng_http_req_copy_data(nng_http_req *req, const void *body, size_t size);
------------
-
-== DESCRIPTION
-
-The `nng_http_req_copy_data()` makes a copy of _body_ (of size __size__)
-and sets the HTTP body for the request _req_ to it.  The copy will be
-deallocated automatically when _req_ is freed.
-
-The copied body data will be automatically sent with the request when it
-is sent using <<nng_http_conn_write_req#,nni_http_conn_write_req(3)>>.
-
-This also updates the relevant `Content-Length` header of _req_.
-
-NOTE: The current framework does not support sending data via chunked
-transfer-encoding.
-
-TIP: To avoid copying data, the
-<<nng_http_req_set_data#,nng_http_req_set_data(3)>> may be used instead.
-
-TIP: It is a good idea to also set the `Content-Type` header.
-
-== RETURN VALUES
-
-This function returns 0 on success, and non-zero otherwise.
-
-== ERRORS
-
-`NNG_ENOMEM`:: Insufficient memory to perform the operation.
-`NNG_ENOTSUP`:: No support for HTTP in the library.
-
-== SEE ALSO
-
-<<nng_http_conn_write_req#,nng_http_conn_write_req(3)>>,
-<<nng_http_req_alloc#,nng_http_req_alloc(3)>>,
-<<nng_http_req_set_data#,nng_http_req_set_data(3)>>,
-<<nng_http_req_set_header#,nng_http_req_set_header(3)>>,
-<<nng#,nng(7)>>