Merge commit '722771973bd' into patches/lyslyskom22891031
* commit '722771973bd': (6177 commits)
Verify that callablep responses are aligned with reality.
Merge remote-tracking branch 'origin/8.1' into gobject-introspection
GCM works again.
Build [Nettle]: Survive shadowing with older nettle.
Correct erroneous configuration results.
A typical cause of such is shadowing a more recent system nettle
with an older local version, where configure will find headerfiles
belonging to the system version if the header files aren't present
in the (intended) older version.