update buildroot to 2017.02.11

bsp/buildroot-2017.02.11/support/dependencies/check-host-tar.sh

@@ -0,0 +1,57 @@
+#!/bin/sh
+
+candidate="$1"
+
+tar=`which $candidate`
+if [ ! -x "$tar" ]; then
+	tar=`which tar`
+	if [ ! -x "$tar" ]; then
+		# echo nothing: no suitable tar found
+		exit 1
+	fi
+fi
+
+# Output of 'tar --version' examples:
+# tar (GNU tar) 1.15.1
+# tar (GNU tar) 1.25
+# bsdtar 2.8.3 - libarchive 2.8.3
+version=`$tar --version | head -n 1 | sed 's/^.*\s\([0-9]\+\.\S\+\).*$/\1/'`
+major=`echo "$version" | cut -d. -f1`
+minor=`echo "$version" | cut -d. -f2`
+bugfix=`echo "$version" | cut -d. -f3`
+version_bsd=`$tar --version | grep 'bsdtar'`
+if [ ! -z "${version_bsd}" ] ; then 
+  # mark as invalid version - not all command line options are available
+  major=0
+  minor=0
+fi
+
+# Minimal version = 1.17 (previous versions do not correctly unpack archives
+# containing hard-links if the --strip-components option is used).
+major_min=1
+minor_min=17
+
+# Maximal version = 1.29 (1.30 changed --numeric-owner output for
+# filenames > 100 characters). This is really a fix for a bug in
+# earlier tar versions regarding deterministic output so it is
+# unlikely to be reverted in later versions.
+major_max=1
+minor_max=29
+
+if [ $major -lt $major_min -o $major -gt $major_max ]; then
+	# echo nothing: no suitable tar found
+	exit 1
+fi
+
+if [ $major -eq $major_min -a $minor -lt $minor_min ]; then
+	# echo nothing: no suitable tar found
+	exit 1
+fi
+
+if [ $major -eq $major_max -a $minor -gt $minor_max ]; then
+	# echo nothing: no suitable tar found
+	exit 1
+fi
+
+# valid
+echo $tar