Bump buidlroot version to 2018.02.6

bsp/buildroot/package/mutt/0001-nodoc.patch

@@ -1,21 +0,0 @@
-Disable the documentation build
-
-The documentation tool is compiled for the target, but executed on the
-host. We don't bother fixing this, as we don't care of the
-documentation in Buildroot.
-
-Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
-
-Index: mutt-1.5.17+20080114/Makefile.am
-===================================================================
---- mutt-1.5.17+20080114.orig/Makefile.am	2010-05-15 18:15:08.000000000 +0200
-+++ mutt-1.5.17+20080114/Makefile.am	2010-05-15 18:15:17.000000000 +0200
-@@ -9,7 +9,7 @@
- IMAP_INCLUDES = -I$(top_srcdir)/imap
- endif
- 
--SUBDIRS = m4 po intl doc contrib $(IMAP_SUBDIR)
-+SUBDIRS = m4 po intl contrib $(IMAP_SUBDIR)
- 
- bin_SCRIPTS = muttbug flea @SMIMEAUX_TARGET@
- 

bsp/buildroot/package/mutt/mutt.hash

@@ -1,2 +1,2 @@
 # Locally calculated
-sha256 e9c6f88e83d48690033f0d862a70293ac746286b77241554f5448bc23bd0d6df  mutt-1.7.1.tar.gz
+sha256 9b81746d67ffeca5ea44f60893b70dc93c86d4bc10187d4dd360185e4d42ed42  mutt-1.8.3.tar.gz

bsp/buildroot/package/mutt/mutt.mk

@@ -4,13 +4,12 @@
 #
 ################################################################################
 
-MUTT_VERSION = 1.7.1
+MUTT_VERSION = 1.8.3
 MUTT_SITE = https://bitbucket.org/mutt/mutt/downloads
-MUTT_LICENSE = GPLv2+
+MUTT_LICENSE = GPL-2.0+
 MUTT_LICENSE_FILES = GPL
 MUTT_DEPENDENCIES = ncurses
-MUTT_CONF_OPTS = --disable-smtp
-MUTT_AUTORECONF = YES
+MUTT_CONF_OPTS = --disable-doc --disable-smtp
 
 ifeq ($(BR2_PACKAGE_LIBICONV),y)
 MUTT_DEPENDENCIES += libiconv
@@ -67,6 +66,7 @@ MUTT_CONF_ENV += \
 MUTT_CONF_OPTS += --with-mailpath=/var/mail
 
 define MUTT_VAR_MAIL
+	mkdir -p $(TARGET_DIR)/var
 	ln -sf /tmp $(TARGET_DIR)/var/mail
 endef
 MUTT_POST_INSTALL_TARGET_HOOKS += MUTT_VAR_MAIL