pgsql: Use MyBackendType in more places to check what process this is

Use MyBackendType in more places to check what process this is

Remove IsBackgroundWorker, IsAutoVacuumLauncherProcess(),
IsAutoVacuumWorkerProcess(), and IsLogicalSlotSyncWorker() in favor of
new Am*Process() macros that use MyBackendType. For consistency with
the existing Am*Process() macros.

Reviewed-by: Andres Freund
Discussion: https://www.postgresql.org/message-id/f3ecd4cb-85ee-4e54-8278-5fabfb3a4ed0@iki.fi

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/393b5599e5177e456cdce500039813629d370b38

Modified Files
--------------
src/backend/access/gin/ginfast.c | 2 +-
src/backend/access/gin/ginvacuum.c | 6 +++---
src/backend/access/heap/vacuumlazy.c | 4 ++--
src/backend/commands/analyze.c | 4 ++--
src/backend/commands/vacuum.c | 8 ++++----
src/backend/postmaster/autovacuum.c | 26 --------------------------
src/backend/postmaster/bgworker.c | 2 --
src/backend/postmaster/postmaster.c | 3 ---
src/backend/replication/logical/slotsync.c | 16 +---------------
src/backend/statistics/extended_stats.c | 2 +-
src/backend/storage/ipc/ipc.c | 2 +-
src/backend/storage/lmgr/proc.c | 23 +++++++++++------------
src/backend/tcop/postgres.c | 6 +++---
src/backend/utils/activity/pgstat_relation.c | 4 ++--
src/backend/utils/init/globals.c | 1 -
src/backend/utils/init/miscinit.c | 4 ++--
src/backend/utils/init/postinit.c | 8 ++++----
src/include/miscadmin.h | 6 +++++-
src/include/postmaster/autovacuum.h | 5 -----
src/include/replication/slotsync.h | 1 -
20 files changed, 42 insertions(+), 91 deletions(-)