gdb.info: Invalidation

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Invalidation Notices

The following annotations say that certain pieces of state may have
changed.
`^Z^Zframes-invalid'
     The frames (for example, output from the `backtrace' command) may
     have changed.
`^Z^Zbreakpoints-invalid'
     The breakpoints may have changed.  For example, the user just
     added or deleted a breakpoint.