bug#38912: 27.0.60; PDumper meets segmentation fault when evil is loaded

[Paul Eggert]

On 1/6/20 9:13 AM, Pip Cet wrote:
> we can fix things properly (by fixing
> sxhash to hash byte code objects) on master.

It's not just bytecode objects; it's also markers and some other stuff. 
The worst case is window configurations, where there's a nontrivial 
function compare_window_configurations that Fequal delegates to.

Does anyone know offhand why we don't simply use eq to compare window 
configurations? Might save me some work in patching this in master.