- Make sure existing gdb sections have a title ending in "with gdb".
- Group existing gdb sections into a new "Using gdb" section, pushing them down 1 level (from sect2 to sect3). This entails a lot of whitespace change.
- Insert new "Introduction to available debuggers" introduction section before "Using gdb" to briefly present both lldb and gdb.
- Remove material in "Starting gdb" redundant with "Introduction to available debuggers".
- Insert new "Using lldb" section after introduction, mirroring the organization and content of the "Using gdb" section: "Starting lldb", "Running a Program with lldb", "Examining a Core File with lldb", and "Attaching to a Running Program with lldb".
- Change earlier reference to gdb to a generic debugger reference.
- Pacify igor somewhat.
While there:
- s/Did we not we set/Did we not set/
- Add xref to the "debugging the kernel" mention.
- Fix parenthese-period order inversions.
PR 241248