[patch] New set auto-load-local-gdbinit + disable it by default

[Tom Tromey]

>>>>> "Jan" == Jan Kratochvil <jan.kratochvil@redhat.com> writes:

Jan> +* GDB no longer reads .gdbinit file from current directory by default.
Jan> +  Use "gdb -x .gdbinit" to retain the original behavior.

I think the NEWS entry should also mention the new parameter.
This is the simplest way for people to get back the old behavior;
and anyway new parameters should always be mentioned in NEWS.

Tom