Differences in branches (v. 1.5)

Common differences

c-cpp.yml - names of branches, patch filename.

QueryID machinery. From stable14 we can use the jumbling technique to generate queryid or another lightweight signature of a query or expression.
compute_query_id = 'regress' - added to avoid regression tests inconsistencies.
Core patch - estimate_num_groups() signature has changed, partitioning logic.
New MemoizePath node introduced in the core planner.
Structure of ModifyTablePath changed
Added more tests on team working of AQO and pg_stat_statements with the same queryid.
Wrapper for the expression_tree_mutator() not needed.

Inconsistency in declaration of aqo_cleanup() - should be fixed in v 1.6
./configure $CONFIGURE_OPTS CFLAGS="-O3"
Starting from PG15, shared memory request have been doing not in _PG_init(), by in specific hook shmem_request_hook_type.
New function MarkGUCPrefixReserved() should be used instead of EmitWarningsOnPlaceholders().
Core patch - the same.
auto_tuning.c - query_context.use_aqo - use pg_prng_double instead of random() because of core changes.
clean_aqo_data.sql - output changed because of the core.
path_utils.c - changes in the Value node - Begining with PG15 we use specific Integer node instead of AConst.
TAP tests - core changes in package definition

Implementation of the cleanup bgworker requires object_access_hook_type, new GUC 'aqo.cleanup_bgworker', changing of cleanup_aqo_database()
Core patch - multilevel adjustment logic
Core logic of copyfuncs.c is changed