Add attribute noreturn (C++11) to functions that will not return

Summary:
Rationale:

• Reduce the number of false positives from static analyzers
• Potentially enable additional compiler optimizations

Backport of core's PR10843

Depends on D906

Test Plan:

make check

Reviewers: schancel, #bitcoin_abc

Reviewed By: schancel, #bitcoin_abc

Differential Revision: https://reviews.bitcoinabc.org/D911