Update buidlroot to version 2016.08.1

bsp/buildroot/package/python-pexpect/Config.in

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+config BR2_PACKAGE_PYTHON_PEXPECT
+	bool "python-pexpect"
+	select BR2_PACKAGE_PYTHON_PTYPROCESS # runtime
+	help
+	  Pexpect is a pure Python module for spawning child
+	  applications; controlling them; and responding to expected
+	  patterns in their output. Pexpect works like Don Libes’
+	  Expect. Pexpect allows your script to spawn a child
+	  application and control it as if a human were typing
+	  commands.
+
+	  https://pexpect.readthedocs.org

bsp/buildroot/package/python-pexpect/python-pexpect.hash

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+# md5 from https://pypi.python.org, sha256 locally computed
+md5 056df81e6ca7081f1015b4b147b977b7 pexpect-4.0.1.tar.gz
+sha256 232795ebcaaf2e120396dbbaa3a129eda51757eeaae1911558f4ef8ee414fc6c pexpect-4.0.1.tar.gz

bsp/buildroot/package/python-pexpect/python-pexpect.mk

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+################################################################################
+#
+# python-pexpect
+#
+################################################################################
+
+PYTHON_PEXPECT_VERSION = 4.0.1
+PYTHON_PEXPECT_SITE = https://pypi.python.org/packages/source/p/pexpect
+PYTHON_PEXPECT_SOURCE = pexpect-$(PYTHON_PEXPECT_VERSION).tar.gz
+PYTHON_PEXPECT_LICENSE = ISC
+PYTHON_PEXPECT_LICENSE_FILES = LICENSE
+PYTHON_PEXPECT_SETUP_TYPE = distutils
+
+# async.py is not usable with Python 2, and removing is the solution
+# recommended by upstream:
+# https://github.com/pexpect/pexpect/issues/290
+ifeq ($(BR2_PACKAGE_PYTHON),y)
+define PYTHON_PEXPECT_REMOVE_ASYNC_PY
+	$(RM) $(@D)/pexpect/async.py
+endef
+PYTHON_PEXPECT_POST_PATCH_HOOKS += PYTHON_PEXPECT_REMOVE_ASYNC_PY
+endif
+
+$(eval $(python-package))