nghttp2: build more of this & fix packaging

nghttp2 also provides http client, server, and proxy.
Add the necessary DEPENDS and build flags to enable those.

They are all packaged into individual packages, with
'nghttp2' being a meta-package now and pulling in all
of the above three applications.

The shared library itself (the only part that this recipe
had been building so far), is also being split into its
own package, meaning existing users shouldn't be affected,
as nobody should have an RDEPENDS on 'nghttp2' at the
moment (due to bitbake's shlibs dependency tracking).

The deflatehd and inflatehd binaries have been completely
dropped, as they are (header) test applications for HTTP/2.
Debian doesn't ship them either.

The python script fetch-ocsp-response is (only) needed
by the proxy, and itself calls out to openssl. We can easily
make this python3 using a simple patch, though.

Minor additional fixes:
* sort DEPENDS alphabetically
* drop python-dir, this is implied by pythonnative
* inherit manpages so as to benefit from man-db processing
  (note that manpages are not generated here, we just want
  the automatic update of the package index caches)
  We need to add a PACKAGECONFIG, as manpages.bbclass
  requires it to be present, even though nghttp2
  unconditionally installs them

Signed-off-by: André Draszik <git@andred.net>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-networking/recipes-support/nghttp2/nghttp2/0001-fetch-ocsp-response-use-python3.patch

@@ -0,0 +1,27 @@
+From 73ec79432fc557a8be4f1500982b1c0f5fdf12a9 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Andr=C3=A9=20Draszik?= <andre.draszik@jci.com>
+Date: Thu, 7 Nov 2019 09:58:52 +0000
+Subject: [PATCH] fetch-ocsp-response: use python3
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Upstream-Status: Inappropriate [oe specific]
+Signed-off-by: André Draszik <git@andred.net>
+---
+ script/fetch-ocsp-response | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/script/fetch-ocsp-response b/script/fetch-ocsp-response
+index 0ff7461..185116b 100755
+--- a/script/fetch-ocsp-response
++++ b/script/fetch-ocsp-response
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ # -*- coding: utf-8 -*-
+ 
+ # nghttp2 - HTTP/2 C Library
+-- 
+2.23.0.rc1
+

meta-networking/recipes-support/nghttp2/nghttp2_1.39.2.bb

@@ -3,13 +3,36 @@ HOMEPAGE = "https://nghttp2.org/"
 SECTION = "libs"
 LICENSE = "MIT"
 LIC_FILES_CHKSUM = "file://COPYING;md5=764abdf30b2eadd37ce47dcbce0ea1ec"
+DEPENDS = "c-ares cunit jansson libev libevent libxml2 openssl zlib"
 
 UPSTREAM_CHECK_URI = "https://github.com/nghttp2/nghttp2/releases"
 
-SRC_URI = "https://github.com/nghttp2/nghttp2/releases/download/v${PV}/nghttp2-${PV}.tar.xz"
+SRC_URI = "\
+    https://github.com/nghttp2/nghttp2/releases/download/v${PV}/nghttp2-${PV}.tar.xz \
+    file://0001-fetch-ocsp-response-use-python3.patch \
+"
 SRC_URI[md5sum] = "de52cd6b587b76486346745514972995"
 SRC_URI[sha256sum] = "a2d216450abd2beaf4e200c168957968e89d602ca4119338b9d7ab059fd4ce8b"
 
-DEPENDS = "libxml2 openssl zlib jansson cunit c-ares"
+inherit cmake manpages pythonnative
+PACKAGECONFIG[manpages] = ""
 
-inherit cmake pythonnative python-dir
+# examples are never installed, and don't need to be built in the
+# first place
+EXTRA_OECMAKE = "-DENABLE_EXAMPLES=OFF -DENABLE_APP=ON"
+
+do_install_append() {
+	rm ${D}${bindir}/deflatehd ${D}${bindir}/inflatehd
+}
+
+PACKAGES =+ "lib${PN} ${PN}-client ${PN}-proxy ${PN}-server"
+
+RDEPENDS_${PN} = "${PN}-client (>= ${PV}) ${PN}-proxy (>= ${PV}) ${PN}-server (>= ${PV})"
+RDEPENDS_${PN}-proxy = "openssl python3-core python3-io python3-shell"
+
+ALLOW_EMPTY_${PN} = "1"
+FILES_${PN} = ""
+FILES_lib${PN} = "${libdir}/*${SOLIBS}"
+FILES_${PN}-client = "${bindir}/h2load ${bindir}/nghttp"
+FILES_${PN}-proxy = "${bindir}/nghttpx ${datadir}/${BPN}/fetch-ocsp-response"
+FILES_${PN}-server = "${bindir}/nghttpd"