rebase to upstream v1.17

stald/utils: Space, lines and voids clenaups
stalld: Add an option to easily set stalld as SCHED_DEADLINE
stalld: Comments cleanup
src/utils: Comments cleanup
src/throttling: Comments cleanup
src/stalld.h Comments cleanup

stalld: Fix incorrect open() return value checks
throttling: Always null terminate sched_rt_runtime_us output
stalld: Remove unreachable statement in detect_task_format()
tests: Fix uninitialized value action.sa_mask
utils: Bail if malloc() returns null in parse_cpu_list()
stalld: Use correct format specifier for long types

Rebuilt for IMA sigs, glibc 2.34, aarch64 flags

stalld: Coding style cleanup
stalld: spaces in place of <TAB>
throttling: Use RT_RUNTIME_PATH in rt_throttling_is_off()
throttling: Check open() on turn_off_rt_throttling
throttling: Adjust variables in restore_rt_throttling()
stalld.c: utils.c: Remove complex assignments from variable declarations
stalld.h: Define MAX_PATH/DIR_PATH/FILE_NAME and use them
stalld: Adjust variables in parse_old_task_format()
utils.c: Use MAX_PATH for pidfile
stalld.c: Remove variable declaration from the middle of the function
stalld: Respect -l option in single threaded mode (1983103)
utils: s/try_to_open_file/check_file_exists/
utils: use check_file_exists in setup_hr_tick()
utils: Check for the new sched_features path

stalld: Fix log message on boost_cpu_starving_vector()
stalld: Add the overload control to the single-threaded mode
stalld: Add the adaptive mode option
stalld: Use the last mode set in the cmdline
stalld: Fallback to the adaptive mode if force_fifo is selected
stalld: Make single-threaded mode the default one
stalld.service: Always restart stalld on exit
utils.c: Fail if user is not root
utils.c: Make the path to sched_debug path dynamic

stalld.8: fix diff cruft left in manpage source
stalld.c: clean up handling of nr_running
stalld.c: remove duplicate parameter to fill_waiting_task()
stalld: Add error handling in get_cpu_idle_time()
stalld.service: Run stalld as sched_fifo via systemd
packaging: clean up Makefiles and rpm specfile
stalld: Always print current function for info messages
stalld: Always print current function for warn messages
stalld: Always print current function for die messages
utils: change PATHMAX to 4096

redhat/stalld.spec: pick up gating test version for changelog
utils.c: set daemon umask to restrict global write/execute (1934586)
hardening fixes from coverity scan (1934590)

utils: Fix bounds check on cpu and end_cpu variables
stalld: Support denylisting of tasks in stalld
src/utils: use right argument for warning printf

Rebuilt for RHEL 9 BETA on Apr 15th 2021. Related: rhbz#1947937

update to pick up latest gating test

Set starvation threshold default to 30 seconds
rework read buffer allocation to properly find page size
Add the -g/--granularity option
Change the default granularity to five seconds
Implement idle detection
Implement the single-threaded mode
Add HRTICK_DL support

Fix Readiness Protocol Mismatch with systemd
test01: update to use buildin atomic operations
test01: add throttling check

rework detect_task_format and buffer_size logic
make CFLAGS for local compile match rpmbuild CFLAGS

add systemd handling of RT Throttling

fix signal handler to catch SIGTERM