- added POSIX-sh compatible init scripts

- added POSIX-sh compatible init scripts
- added systemd services and configs
- drop hvm bcond, we have bcc on all relevant archs
- updated files
- merged udev into main package (there is no point splitting this on modern systems)
- build stubdom in build not in install
- stubdom must be built separately (no prefix and no CFLAGS redefining)

Changed files:
    blktapctrl.service -> 1.1
    blktapctrl.sysconfig -> 1.1
    proc-xen.mount -> 1.1
    var-lib-xenstored.mount -> 1.1
    xen-watchdog.init -> 1.1
    xen-watchdog.service -> 1.1
    xen.logrotate -> 1.1
    xen.spec -> 1.96
    xenconsoled.init -> 1.1
    xenconsoled.service -> 1.1
    xenconsoled.sysconfig -> 1.1
    xend.init -> 1.1
    xend.service -> 1.1
    xend.tmpfiles -> 1.1
    xendomains.init -> 1.1
    xenstored.init -> 1.1
    xenstored.service -> 1.1
    xenstored.sysconfig -> 1.1
    xenstored.tmpfiles -> 1.1