[WIP] remove deprecated tbb::task_scheduler_init, use new api

[Hardcode84]

task_scheduler_init was removed in TBB_INTERFACE_VERSION == 12002 and new replacement api was added in 12003.

Also, 12002 lib is no longer binary compatible with previous versions so library name was changed (not properly handled yet).
Fork safety selection logic also wasn't updated.

[stuartarchibald]

Thanks for opening this and starting work for the new TBB interfaces @Hardcode84

[Hardcode84]

12002 binaries are available here: https://github.com/oneapi-src/oneTBB/releases/tag/v2021.1-beta08

[jschueller]

hello, I have trouble understanding what task_scheduler_handle does compared to task_scheduler_init,
as it has no methods outside of get/finalize, so I cant see where you can pass a number of threads etc.

[Hardcode84]

Setting global thread count is still possible via global_control but discouraged (especially if you have other libraries which can use tbb internally, lke mkl ).

Set desired concurrency as task_arena ctor parameter

[henryiii]

Guessing this limitation is still needed for Numba 0.53, leaving the pin in the conda-forge recipe for now.

[stuartarchibald]

@Hardcode84 am hoping to get this in for the next (0.54) release, any chance you could please rebase this on current mainline? Thanks.

[Hardcode84]

Rebased