[PATCH] Disable bracketed paste mode in GDB tests

[Tom Tromey]

>>>>> "Andreas" == Andreas Schwab <schwab@linux-m68k.org> writes:

Andreas> Note that readline will barf if it finds an unknown variable in INPUTRC.
Andreas> When using --with-system-readline and the system readline is < 8.1 this
Andreas> will fail.

I tested this scenario before submitting, by changing the line to read
"set hi-bob off", and it still passed my smoke test.  There's no mention
of "hi-bob" in the gdb.log.

If you can tell me how to detect the failure, I'll see what I can do.

Tom