xgetptr: Improve comment describing helper function.
xgetint: Add comment describing helper function.
xgettype: Add comment describing helper function.
xgetsym: Add comment describing helper function.
xprintstr: Add comment describing helper function.

Co-authored-by: Eli Zaretskii <eliz@gnu.org>

Proposed in (bug#79932).

Co-authored-by: Eli Zaretskii <eliz@gnu.org>

* src/eval.c: new primitive debugger-trap
* src/.gdbinit: set breakpoint to Fdebugger_trap
* etc/DEBUG: document it.
Remove suggestion to use Fredraw_display.

This do-nothing primitive gives control to GDB, and for debugging
convenience a breakpoint is set by default in .gdbinit.

Run "TZ=UTC0 admin/update-copyright".

This fixes the problem whereby attaching GDB to a running Emacs
on MS-Windows would slow down keyboard input, because the
low-level keyboard hook installed by Emacs at startup was still
installed, but with Emacs stopped, the hook code couldn't run,
and therefore the OS would time-out waiting for the hook to
return.  Now when GDB is attached to Emacs, it will remove the
hook right away.
* src/.gdbinit: Call 'remove_w32_kbdhook' if the keyboard hook is
already installed.
* src/alloc.c (defined_WINDOWSNT): New enum.
(gdb_make_enums_visible): Add 'defined_WINDOWSNT'.

* src/.gdbinit (xtsparser, xtsnode, xtsquery): New functions.
(xpr): Call them for treesit objects.

In preparation for the use of `PVEC_COMPILED` objects for
interpreted functions, rename them to use a more neutral name.

* src/lisp.h (enum pvec_type): Rename `PVEC_COMPILED` to `PVEC_CLOSURE`.
(enum Lisp_Compiled): Use `CLOSURE_` prefix i.s.o `COMPILED_`.
Also use `CODE` rather than `BYTECODE`.
(CLOSUREP): Rename from `COMPILEDP`.
(enum Lisp_Closure): Rename from `Lisp_Compiled`.

* src/alloc.c, src/bytecode.c, src/comp.c, src/data.c, src/eval.c,
* src/fns.c, src/lisp.h, src/lread.c, src/pdumper.c, src/print.c,
* src/profiler.c: Rename all uses accordingly.
* src/.gdbinit (xclosure): Rename from `xcompiled`.
(xcompiled): New obsolete alias.
(xpr): Adjust accordingly.  Also adjust to new PVEC_CLOSURE tag name.