Remove unused Xenstore module dependencies

Signed-off-by: Rob Hoes <rob.hoes@citrix.com>
link libxl bindings and libraries
add xl test program
add xenlight xenops backend
xenopsd: host ops using libxl
update libxl_test with dominfo
test Dominfo.get
xenopsd: get dominfo from libxl
test vif
xenopsd: vif plug
xenlight event loop
tests for event loop
pass in logger
vif unplug
improve logging
vif script
mtu
vif move
pci-plug
disable xl logging for now