package/memcached: bump to version 1.6.21

- Send first patch upstream
- Drop second and third patches (already in version) and so drop
  autoreconf

https://github.com/memcached/memcached/wiki/ReleaseNotes1618
https://github.com/memcached/memcached/wiki/ReleaseNotes1619
https://github.com/memcached/memcached/wiki/ReleaseNotes1620
https://github.com/memcached/memcached/wiki/ReleaseNotes1621

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 6ce55ab)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

.checkpackageignore

@@ -901,9 +901,6 @@ package/matchbox/0001-defaulttheme.patch Upstream
 package/matchbox/0002-src-Fix-build-with-gcc-10.patch Upstream
 package/mediastreamer/0001-src-videofilters-nowebcam.c-fix-build-without-ffmpeg.patch Upstream
 package/mediastreamer/0002-Use-AV_INPUT_BUFFER_PADDING_SIZE-to-determine-paddin.patch Upstream
-package/memcached/0001-logger.c-initialize-rport.patch Upstream
-package/memcached/0002-check-for-sys-auxv.h.patch Upstream
-package/memcached/0003-configure.ac-add-disable-werror.patch Upstream
 package/memstat/0001-PATH_MAX.patch Upstream
 package/mender-connect/S43mender-connect Shellcheck
 package/menu-cache/0001-Support-gcc10-compilation.patch Upstream

package/memcached/0001-logger.c-initialize-rport.patch

@@ -23,7 +23,7 @@ Fixes:
  - http://autobuild.buildroot.org/results/7a46ac38d10b1859034017e0294961daa8f48dd2
 
 Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
-[Upstream status: not sent yet]
+Upstream: https://github.com/memcached/memcached/pull/1077
 ---
  logger.c | 4 ++--
  1 file changed, 2 insertions(+), 2 deletions(-)

package/memcached/memcached.hash

@@ -1,6 +1,6 @@
-# From http://www.memcached.org/files/memcached-1.6.17.tar.gz.sha1
-sha1  e25639473e15f1bd9516b915fb7e03ab8209030f  memcached-1.6.17.tar.gz
+# From http://www.memcached.org/files/memcached-1.6.21.tar.gz.sha1
+sha1  6d899680b4ba4b76b6c92120143cf87630ee984a  memcached-1.6.21.tar.gz
 
 # Locally computed
-sha256  2055e373613d8fc21529aff9f0adce3e23b9ce01ba0478d30e7941d9f2bd1224  memcached-1.6.17.tar.gz
+sha256  c788980efc417dd5d93c442b1c8b8769fb2018896c29de3887d22a2f143da2ee  memcached-1.6.21.tar.gz
 sha256  bc887c4ad8051fe690ace9528fe37a2e0bb362e6d963331d82e845ca9b585a0c  COPYING

package/memcached/memcached.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-MEMCACHED_VERSION = 1.6.17
+MEMCACHED_VERSION = 1.6.21
 MEMCACHED_SITE = http://www.memcached.org/files
 MEMCACHED_DEPENDENCIES = libevent
 MEMCACHED_CONF_ENV = ac_cv_prog_cc_c99='-std=gnu99'
@@ -13,8 +13,6 @@ MEMCACHED_LICENSE = BSD-3-Clause
 MEMCACHED_LICENSE_FILES = COPYING
 MEMCACHED_CPE_ID_VENDOR = memcached
 MEMCACHED_SELINUX_MODULES = memcached
-# We're patching configure.ac
-MEMCACHED_AUTORECONF = YES
 
 ifeq ($(BR2_ENDIAN),"BIG")
 MEMCACHED_CONF_ENV += ac_cv_c_endian=big