build: sbd.spec - remove commented setup macro

build: update changelog in spec-file

Build: rpm: fix fedora handling of compat20

test: load libaio.so instead of libaio.so.1

Fix: cib.h: conditionally include cib_compat.h

Fix: lrmd.h: conditionally include lrmd_compat.h

Merge branch '2.1' into merge_back_to_main

Doc: ChangeLog: update for 2.1.7-rc2 release

Build: rpm: require minimum libxml2 version of 2.6.0

Update expected test output

Fix: libcrmcommon: Write crm_verify detailed messages to XML

Add CLI tests for crm_verify

Refactor: io_getevents returns an int

Refactor: introduce sigqueue_zero

Refactor: use int for timeouts & latency instead of wild mix and casts

Refactor: move time difference / timeout calculation to single place

Refactor: spawn out sbd-watchdog.c

Build: fix build with clang compiler

Build: rpm: convert licenses to SPDX

Build: rpm: avoid bare wildcards under shared directories in spec

Fix: query-watchdog: avoid issues on heap allocation failing

spec: convert license naming to SPDX

Refactor: sbd-md: alloc/de-alloc reverse order

Fix: watchdog-fencing: terminate dangling timer before watchdog-waiting

Refactor: watchdog-fencing: convenience function pcmk__is_fencing_action

Fix: watchdog-fencing: correctly derive timeout with topology

Test: fence_dummy: add off action delay

Fix: fenced: use enum fenced_target_by consistently

Bump Version to 1.5.2

fence_sbd: improve error handling

Fix: do unfencing equally for cluster-nodes & remotes

Test: cts-scheduler: update expected output for changes in unfencing

Fix: Be a bit more descriptive on issues opening watchdog-devices

Fix: make void prototypes consistent to fix freebsd