Renaming heading to Design Guide
(cherry picked from commit 3e20cb0139fc976c9d580f8c17e16af11671762a)
updated links to xmos.com boards
(cherry picked from commit db6fcf82dd473410c02f83931595f85abd1ec02e)
Change to talker to prevent polling of FIFOs

(cherry picked from commit 45bee9e373c84ffd6f91f110a23e9971bae6a7a3)
Modifications for mono streams

(cherry picked from commit dc295e842951f19877c3ab0e837e93c9da5810e9)

Conflicts:
	app_avb_four_streams/src/app_config.h
	app_avb_four_streams/src/main.xc
	app_avb_four_streams/src/simple_demo_controller.c
	module_avb/src/ethernet_conf.h
	module_avb_1722/src/avb_1722_def.h
Fix to stop a new talker stream from blocking out the other streams

(cherry picked from commit 5ad29cd8552af7522df0a102bb0ef0020f3bc392)

Conflicts:
	module_avb_1722/src/avb_1722_talker.xc