Real-Time Patches Updated For Linux 5.9/5.10 With The Code Not Yet Mainlined

There was talk earlier this year of mainlining the real-time Linux kernel patches after similar discussions last year didn't result in it happening. Merging the RT code didn't happen for the recent Linux 5.10 merge window but at least the out-of-tree patches were quickly re-based for Linux 5.9 stable and 5.10-rc1...