more rt-tests cleanups and a cyclictest feature

Hey Clark, John-

Here's another set, this one contains eight patches are very minor cleanups (found mostly via code inspection and by building with warnings cranked up).

The last patch introduces an option to cyclictest to control the dumping of histogram data into a separate file, it's useful for when you want to see the 'normal' cyclictest live-updating, but also want to store away the generated histogram for later analysis.

(My goal was to present a net-negative diffstat...I came so close!)

Thanks!
Josh

Gratian Crisan (1):
cyclictest: Add option for dumping the histogram in a file

Josh Cartwright (8):
cyclictest: consistently make all functions 'static'
cyclictest: fixup documentation for --priority option
cyclictest: drop unnecessary numa_on_and_available() check
signaltest: drop unused tsnorm()
cyclictest: use correct type when allocating cpu bitmask size
cyclictest: drop impossible use_fifo conditional
cyclictest: fail if use_fifo && thread creation failed
error: mark fatal, err_exit, err_quit as being noreturn

 src/cyclictest/cyclictest.c | 120 ++++++++++++++++++++++++++------------------
 src/cyclictest/rt_numa.h    |  11 +---
 src/include/error.h         |   6 +--
 src/signaltest/signaltest.c |   8 ---
 4 files changed, 74 insertions(+), 71 deletions(-)

2.5.0