rng-tools-5-bp150.2.4

- 90-hwrng.rules: Improve udev rule, autostart rngd only
  when there are hwrng drivers available and one is actually
  bound to the device.

- enable aarch64 as well

- Enable Power64 architecture. Starting with Power7+ we have in
  CPU random number generator

- add patch: rng-tools-check_signals.patch (bnc#897335)
  check for signals in all loops to react to SIGINT/SIGTERM

- Apparently --fill-watermark expects a number between 0 and 4096
  now. So we now set it to 3700 which is ~90% of 4096.

- Update to version 5
  * Support RDRAND capable systems that don't have AES-NI
  * Man page spelling fixes
  * Don't use fixed AES key for data reduction
  * Platform: Support x32. x86-64 micro-optimizations.
  * Fix RDRAND data reduction
  * Enable RDSEED instruction
- Add libgcrypt dependency needed for RDRAND
- Add back --fill-watermark=90% to the service file
- Package NEWS file
- Spec cleanup

- package is needed on %arm (raspberry pi at least).

- systemd: Do not start in containers, in that case
  entropy comes from the "host"
- systemd: Conflict with haveged, only one entropy daemon
  must be running.

- Fix automagic startup with udev/systemd virtio-rng KERNEL
  name is hw_random not hwrng..

- in some parallel universe --fill-watermark took a percentage
  value, not in this incarnation at least, where it takes
  an integer. just use the sane builtin default

- udev does not like rules without a new line

- there is no trousers-devel requirement anymore
- define _udevrulesdir only if not already defined
- run %udev_rules_update, if defined.

- Drop old sysvinit stuff; none of distribution targets use it anymore
- Remove redundant %clean section
- Remove useless automake BuildRequires, CFLAGS export and autoreconf call

- in a previous change I removed WantedBy=multi-user.target
  from the systemd service file because the service can get
  automatically started by udev, however there are usecases
  on which manual start is desirable, restore that.

- remove option "--feed-interval=1" from init-script and
  service file, no current version of rng-tools has ever
  known this option (bnc#819764)

- Just to be in the safe side, put udev rules later into
  the mix 50-hwrng.rules --> 90-hwrng.rules

- 50-hwrng.rules + rng-tools.service, use activation by systemd+udev
  combo, the service will come up automatically when the kernel
  registers a /dev/hwrng device, service no longer requires
  manual intervention to work at all.

- update to version 4:
  * Add RDRAND instruction support
  * Add -q and -v options for quiet and verbose output
  * Add -p option for specifying PID file (text file containing daemon's PID)
  * Disable entropy source if facing continued failures, but be
    tolerant of the occasional fault.
  * Default device is now the preferred /dev/hwrng
  * Do not use TPM device for RNG access, if /dev/hwrng is present
    (TPM RNG is exported via the kernel, in newer kernels)
- require $remote_fs in init script as binaries are below /usr

- Update to version 3
  * add rngteswt program
  * support TPM chip's hardware RNG (and thus, a framework for
    supporting multiple entropy sources)
  * change default hardware RNG device name to "/dev/hw_random"

- Put rngd back into %{_sbindir} /usr is mounted in the initrd now.