Build problem Ubuntu 21.10

[w2vy]

May apply to other versions, but it did build fine on docker image of 20.04

I found two issues and need help properly applying them to the code base

[w2vy]

First problem I found was same as zcash/zcash#4354
I manually applied the change and the patch warning went away

The next error was identical to http://github.com/boostorg/thread/issues/283 and repaired by boostorg/thread#297

It looks like all the changes I needed to make were local

[w2vy]

@blondfrogs I was wrong about the last change being local, boostorg issue 283 above, it is in the downloaded boost
tom@rnode:~/fluxd-vol/fluxd$ find . -name thread_data.hpp
./depends/x86_64-unknown-linux-gnu/include/boost/thread/pthread/thread_data.hpp
./depends/x86_64-unknown-linux-gnu/include/boost/thread/win32/thread_data.hpp

So I guess we need to patch the patch or use a newer version of boost that has this fix.

[blondfrogs]

@w2vy Do we know which version of boost has this fix?