doc: Update HACKING.md and RELEASE_CHECKLIST.md. * HACKING.md: Change documentation about updating NEWS.VERSION+1.md file. * RELEASE_CHECKLIST.md: Wrap most long lines to 80 characters. Add section on updating stable and default branch version numbers. Add pointers in "GUI translation files" to "README.md" in libgui/languages/build_ts. Update instructions for compiling with address sanitizer. Add more details to "Create new release candidate". Add more steps to "Final Release". Add names of mailings lists to "Announce final release". Remove first two steps from "Post-Release" actions.

--- a/etc/HACKING.md	Sun Nov 27 17:03:13 2022 -0800
+++ b/etc/HACKING.md	Sun Nov 27 20:15:24 2022 -0800
@@ -472,8 +472,9 @@
 8. Remove functions and properties deprecated in MAJOR-1 (see ecf207896f76,
    for example)
 
-9. Update `NEWS` file for next development cycle (see 0ec5eaabaf2c, for
-   example).
+9. Create new `etc/NEWS.VERSION+1.md` file by copying `etc/NEWS.VERSION.md` and
+   then removing text so that it is a template file with headings only (see
+   0ec5eaabaf2c, for example).
 
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