[Bug target/98112] Add -f[no-]direct-access-external-data & drop HAVE_LD_PIE_COPYRELOC

[foom at fuhm dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98112

James Y Knight <foom at fuhm dot net> changed:

           What    |Removed                     |Added
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                 CC|                            |foom at fuhm dot net

--- Comment #8 from James Y Knight <foom at fuhm dot net> ---
The requested semantics were subsequently implemented by GCC as
`-mno-direct-extern-access` in PR100593, is that right? (Except that it was
done only for x86-64, rather than being arch-independent.)

So maybe this PR should be closed?