Lots of improvements

• Replace 'xcp' in alternatives path with 'xapi'
• Use 'xl pci-attach' for PCI passthrough
• Turn on TCP keepalives on migration sockets
• libxl: update to serial_list (Xen 4.5)
• Add support for configuring Windows update
• Support for blkback with raw format block devices
• Failing to add a vif to a bridge is a hard error
• Improved VGPU support
• Support SMAPIv3

Fix libvirt backend build

• now builds against xapi-idl.0.10.0

IGD passthrough, read caching, more hooks, floppies, plugins

• update to cohttp.0.15.2
• update following xcp-rrd renamed to rrd in ocamlfind
• support read-caching
• allow block backend-kind to be overridden by SM plugins
• support IGD passthrough
• add hooks for post-resume and post-migrate
• support floppy disk images (useful for packer and cloudinit)
• allow calling "VM plugins"
• allow HVM linux VMs to use >4 disks

Better libxl, storage handling

• add some high-level documentation
• xl: fix block device handling
• xl: allow the storage backend to choose between Blkback and Qdisk
• update to new Backtrace API
• Fix parsing of VDI locations containing '/'
• update following xentoollog change
• fix "make install"
• "make clean" nolonger deletes configure information
• add an opam file

build fixes

• add dependency on oclock

better libxl support

• better libxl support
• improved robustness should the event thread throw an exception
• Improve logging around cancellation

Minor configure fix

• don't try to automatically run the configure script

Support for older OCaml

• remain compatible with OCaml 4.01.0

Better UI, easier to install

• add man pages and more regular command-line interface
• read the kthread-pid from the right path: needed for VBD QoS
• eliloader, pygrub, vncterm and hvmloader are now optional dependencies
• improve the convert-legacy-stream logging

vCPU hotplug, libxl improvements

• allow vCPU hotplug for HVM if feature-vcpu-hotplug is set
• by default use the upstream qemu with libxl
• fix the 'make install' target
• safeguard against malicious suspend images