Added missing descriptions of some tools.

Automerge-Triggered-By: GH:hugovk

Move patchcheck.py, reindent.py and untabify.py scripts to a new
Tools/patchcheck/ directory.

Remove abitype.py and pep384_macrocheck.py scripts of Tools/scripts/.

Remove outdated example scripts of the Tools/scripts/ directory:

* gprof2html.py
* md5sum.py
* nm2def.py
* pathfix.py
* win_add2path.py

Remove test_gprof2html, test_md5sum and test_pathfix of test_tools.

* Retire eptag ptag scripts

* 📜🤖 Added by blurb_it.

* fix news entry error

Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>

Remove the sys.getdxp() function and the Tools/scripts/analyze_dxp.py
script. DXP stands for "dynamic execution pairs". They were related
to DYNAMIC_EXECUTION_PROFILE and DXPAIRS macros which have been
removed in Python 3.11. Python can now be built with "./configure
--enable-pystats" to gather statistics on Python opcodes.

Remove outdated example scripts of the Tools/scripts/ directory. A
copy can be found in the old-demos project:
https://github.com/gvanrossum/old-demos

Removed scripts (39):

* byext.py
* byteyears.py
* cleanfuture.py
* copytime.py
* crlf.py
* db2pickle.py
* dutree.doc
* dutree.py
* find-uname.py
* find_recursionlimit.py
* finddiv.py
* findlinksto.py
* findnocoding.py
* fixcid.py
* fixdiv.py
* fixheader.py
* fixnotice.py
* fixps.py
* get-remote-certificate.py
* google.py
* highlight.py
* ifdef.py
* import_diagnostics.py
* lfcr.py
* linktree.py
* lll.py
* mailerdaemon.py
* make_ctype.py
* mkreal.py
* objgraph.py
* pdeps.py
* pickle2db.py
* pindent.py
* pysource.py
* reindent-rst.py
* rgrep.py
* suff.py
* texi2html.py
* which.py

Changes:

* Remove test_fixcid, test_lll, test_pdeps and test_pindent
  of test.test_tools.
* Remove get-remote-certificate.py changelog entry, since the script
  was removed.

Note: there is a copy of crlf.py in Lib/test/test_lib2to3/data/.

Also updated `make -C htmlview` so it used a full path with `file://`, because the original didn't open the page (macOS).

For example:
```sh
cd Doc

# Doesn't open anything:
python3 -c "import webbrowser; webbrowser.open('build/html/index.html')"

# Opens the docs page e.g. file:///Users/hugo/github/cpython/Doc/build/html/index.html :
python3 -c "import os, webbrowser; webbrowser.open('file://' + os.path.realpath('build/html/index.html'))"
```

https://bugs.python.org/issue36329

This is one of the few files that has intimate knowledge of the pyc file
format. Since it lacks tests it tends to become outdated fairly quickly.
At present it has been broken since the introduction of PEP 552.