Check performance of changing default hasher to XXHash32

[bdice]

I would like to know if switching our default hasher from MurmurHash3_32 to XXHash32 has an impact on performance. This was previously proposed in #12829 but deserves an issue of its own to be acted upon.

If the register usage is lower for XXHash32 than MurmurHash3_32, it might benefit some of cudf's most complex kernels. Mixed joins, for instance, combine hashing and AST execution. Similar ideas have been mentioned before in issues like #10587. I'm not confident that this would make a positive difference (I expect no significant effect, based on our past explorations of mixed joins), but it would be worth checking.

Originally posted by @bdice in #12829

[bdice]

Closing as duplicate of #17531. Great minds ...open duplicate issues!