Update buidlroot to version 2016.08.1

bsp/buildroot/package/jack2/jack2.mk

@@ -9,6 +9,7 @@ JACK2_SITE = $(call github,jackaudio,jack2,$(JACK2_VERSION))
 JACK2_LICENSE = GPLv2+ (jack server), LGPLv2.1+ (jack library)
 JACK2_DEPENDENCIES = libsamplerate libsndfile alsa-lib host-python
 JACK2_INSTALL_STAGING = YES
+JACK2_PATCH = https://github.com/jackaudio/jack2/commit/ff1ed2c4524095055140370c1008a2d9cccc5645.patch
 
 ifeq ($(BR2_PACKAGE_OPUS),y)
 JACK2_DEPENDENCIES += opus
@@ -18,12 +19,36 @@ ifeq ($(BR2_PACKAGE_READLINE),y)
 JACK2_DEPENDENCIES += readline
 endif
 
+ifeq ($(BR2_PACKAGE_JACK2_LEGACY),y)
+JACK2_CONF_OPTS += --classic
+else
+define JACK2_REMOVE_JACK_CONTROL
+	$(RM) -f $(TARGET_DIR)/usr/bin/jack_control
+endef
+JACK2_POST_INSTALL_TARGET_HOOKS += JACK2_REMOVE_JACK_CONTROL
+endif
+
+ifeq ($(BR2_PACKAGE_JACK2_DBUS),y)
+JACK2_DEPENDENCIES += dbus
+JACK2_CONF_OPTS += --dbus
+endif
+
+# Even though it advertises support for celt-0.5.x, jack2 really
+# requires celt >= 0.5.2 but we only have 0.5.1.3 and we cannot
+# upgrade, so we do not add a dependency to celt051, which it can't
+# find anyway as it looks for celt.pc but we only have celt-51.pc.
+
+# The dependency against eigen is only useful in conjunction with
+# gtkiostream, which we do not have, so we don't need to depend on
+# eigen.
+
 define JACK2_CONFIGURE_CMDS
 	(cd $(@D); \
 		$(TARGET_CONFIGURE_OPTS)	\
 		$(HOST_DIR)/usr/bin/python2 ./waf configure \
 		--prefix=/usr			\
 		--alsa				\
+		$(JACK2_CONF_OPTS)		\
 	)
 endef