Merge pull request #38 from euanh/master

xenserver-core-ubuntu: Work around ocaml-libvirt build problem
gerrit change picker accepts extra changes

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Merge pull request #39 from matelakat/add-extra-changes

gerrit change picker accepts extra changes
Only include open changes

If extra changes are specified, only include them, if they are new ones.
Merge pull request #40 from matelakat/add-extra-changes

Only include open changes
Use bridge names for neutron builds

As neutron does not recognise the network name-label, we need to pass
the bridge name. This means, that we need to skip the specification of
FLAT_NETWORK_BRIDGE.

This way, the bridge name will be passed to domU.
Merge pull request #41 from matelakat/use-bridge-names

Use bridge names for neutron builds
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Merge pull request #42 from matelakat/fix-xva-build

Enable xtrace
Merge pull request #43 from euanh/master

build-xenserver-core-ubuntu: Fix location of pbuilderrc.in
Locking must use exclusive lock on the database
xenserver-core-ubuntu: Test the 'make install' target after building

Signed-off-by: Euan Harris <euan.harris@citrix.com>