Merge #15622: Remove global symbols: Avoid using the global namespace if possible

fb434159d1 Remove global symbols: Avoid using the global namespace if possible (practicalswift)

Pull request description:

  Remove global symbols: Avoid using the global namespace if possible.

  Partially resolves #15612 ("Reduce the number of global symbols used").

  Change in global symbols as reported by `nm bitcoind` before vs after:

  ```
  $ diff -u <(nm src/bitcoind-before | c++filt | grep -E '^[0-9a-f]+ [A-Z] ' | cut -f3- -d' ' | sort -u) \
            <(nm src/bitcoind-after  | c++filt | grep -E '^[0-9a-f]+ [A-Z] ' | cut -f3- -d' ' | sort -u) \
            | grep -E '^[+-][^+-]'
  -boundSockets
  -cs_warnings
  -eventHTTP
  -fFeeEstimatesInitialized
  -fLargeWorkForkFound
  -fLargeWorkInvalidChainFound
  -pathHandlers
  -strMiscWarning[abi:cxx11]
  -threadHTTP
  ```

ACKs for commit fb4341:

Tree-SHA512: d2f78f6188a992b0e0de8d107e2c494cfa0faa2de4fda634a1d3606d6515633bec86289cf2a2e78ffe467b17b795e2243cc459fb44e0dfe2fc69899506ff61c9

0 files changed, 0 insertions, 0 deletions