bed3604 Fix pg_regress on versions > 12 (Postgres-Extensions#5) (Postgres-Extensions#6)

git-subtree-dir: pgxntool
git-subtree-split: bed36044679d6b53ad7cd2875272552a4ad6508a

Biggest change is that starting with Postgres 12 OID columns in catalog
tables were no longer hidden, which required adjusting a few views and
tests. Also update pgxntool.

…catalog.pg_class

Also, refactor common code between it and function__arg_types()

- Eliminate duplicate NULL array creation logic by restructuring CASE statement
- Use pronargs instead of parsing proargtypes text for array size
- Move data type definitions and mapping functions to beginning of file
- Improve code organization and readability

- Add enum types equivalent to relation_relkind for pg_proc fields:
  * routine_prokind and routine_type (function/procedure/aggregate/window)
  * routine_proargmode and routine_argument_mode (in/out/inout/variadic/table)
  * routine_provolatile and routine_volatility (immutable/stable/volatile)
  * routine_proparallel and routine_parallel_safety (safe/restricted/unsafe)
- Remove explicit type grants, rely on default privileges
- Clean up redundant comments in mapping functions
- Add comprehensive test suite for new enum types and permissions

54793a3 Merge branch 'master' into upstream/stable
ab7f6e2 Stamp 1.0.0
3a571ba Add pg_tle support and modernize test infrastructure (#11)
b96ea6d Add support for Claude code; build and doc improvements (#9)
e9c24de Fix pg_regress on versions > 12 (Postgres-Extensions#5)

git-subtree-dir: pgxntool
git-subtree-split: 54793a39251290657767816d23b45d6297f3a671

Versioned files should now be kept in git.

Also, fix missing .gitignore

3b8cb2a Stamp 1.1.0
550a901 Remove commit.md (maintained in pgxntool-test)
d73ca93 Add unique test database names to prevent conflicts (#13)
9b344be Add update-setup-files.sh for 3-way merging after pgxntool-sync (#12)
REVERT: 54793a3 Merge branch 'master' into upstream/stable
REVERT: bed3604 Fix pg_regress on versions > 12 (Postgres-Extensions#5) (Postgres-Extensions#6)

git-subtree-dir: pgxntool
git-subtree-split: 3b8cb2a96c2611bb44b1d69fd533fd0f23fa8995

639756c Stamp 1.1.1
6ba3176 Fix pg_tle exception handler and empty upgrade files (#15)

git-subtree-dir: pgxntool
git-subtree-split: 639756c43a64717347b82b46acfec5be478a7bbf