Enable more algorithms for internal use

[miscco]

This ports more algorithms to be usable internally.

This currently covers all algorithms except sorting and the allocating ones.

To support more users all algorithms are made available in C++11 and also constexpr from C++14 onwards

Note that we currently do not expose cuda/std/algorithm> so this has no effect on product code but is an enablement for future work

[griwes]

Other than in the last commit with INPUT_DATA, is there anything funky you needed to do in tests? I have only skimmed them in the commits that added them, assuming that it's generally just copy them from upstream and slap some host/device on functions.

If there is anything funky, I'd like to take a look at it, but otherwise this looks good to me.

[miscco]

Other than in the last commit with INPUT_DATA, is there anything funky you needed to do in tests? I have only skimmed them in the commits that added them, assuming that it's generally just copy them from upstream and slap some host/device on functions.

If there is anything funky, I'd like to take a look at it, but otherwise this looks good to me.

I did restructure them a bit so that we always have the pattern

test();
static_assert(test());

Besides that the only larger change is replacing all lambdas with structs