Fix typos and inconsistencies for v16

Hello hackers,

Please consider fixing the following unique words/identifiers introduced in v16:
1. addresess -> addresses
2. adminstrator -> administrator // the same typo found in src/backend/po/id.po, but perhaps it should be fixed via 
pgsql-translators
3. appeneded -> appended
4. appliciable -> applicable
5. BackroundPsql -> BackgroundPsql
6. binaies -> binaries
7. compresion -> compression
8. containsthe ->  contains the
9. contextes -> contexts
10. deparseAnalyzeTuplesSql -> deparseAnalyzeInfoSql // that function was renamed in 57d11ef0

11. DO_LARGE_OJECT_DATA -> DO_LARGE_OBJECT_DATA
12. doesnt't -> doesn't
13. dst_perminfo -> dst_perminfos
14. eror -> error
15. execpt -> except
16. forech -> foreach
17. GetResultRelCheckAsUser -> ExecGetResultRelCheckAsUser
18. GUCS -> GUCs
19. happend -> happened
20. immitated -> imitated

21. insert_xid -> tuple_xid // see bfcf1b348
22. ldap_add -> ldapadd_file
23. ldapbindpassw -> ldapbindpasswd
24. MemoryChunkSetExternal -> MemoryChunkSetHdrMaskExternal
25. non-encyrpted -> non-encrypted
26. --no-process_main -> --no-process-main
27. optionn -> option
28. Othewise -> Otherwise
29. parellel -> parallel
30. permissons -> permissions

31. pg_pwrite_zeroes -> pg_pwrite_zeros
32. pg_writev -> pg_pwritev
33. possbile -> possible
34. pqsymlink -> pgsymlink
35. PG_GET_WAL_FPI_BLOCK_COLS -> PG_GET_WAL_BLOCK_INFO_COLS
36. RangeVarCallbackOwnsTable -> RangeVarCallbackMaintainsTable // see 60684dd83
37. remaing -> remaining
38. ResourceOwnerForgetBufferIOs -> ResourceOwnerForgetBufferIO
39. RMGRDESC_UTILS_H -> RMGRDESC_UTILS_H_ // or may be the other way
40. rolenamehash -> rolename_hash

41. ROLERECURSE_SETROLe -> ROLERECURSE_SETROLE
42. sentinal -> sentinel
43. smgzerorextend -> smgrzeroextend
44. stacktoodeep -> rstacktoodeep // an excessive character was deleted with db4f21e4a?
45. tar_set_error -- remove (obsolete since ebfb814f7)
46. test_tranche_name -- remove (not used, see 006b69fd9)
47. varilables -> variables
48. xid_commit_status -> xmin_commit_status

Also, maybe OID_MAX should be removed from src/include/postgres_ext.h as it's unused since eb8312a22.

Beside that, this simple script:
for w in $(cat src/tools/pgindent/typedefs.list); do grep -q -P "\b$w\b" -r * --exclude typedefs.list || echo "$w";
done
detects 58 identifiers that don't exist in the source tree anymore (see typedefs.lost attached).
Maybe they should be removed from typedefs.list too.

Best regards,
Alexander