Roll out \memberswap qdoc macro outside qtbase

After adding the \memberswap familiy of qdoc macros (QTBUG-129573, QTBUG-129772), roll them out to other modules, after integration has run.

Some notes on execution:

• pick back as far as the qtbase patches have been (see QTBUG-129573)
• separate converting standard-phrasing ("Swaps this X with \a other.", "Swaps X \a other with this X") from fixing non-standard phrasing, to make reviews simpler
• I used both /and never fails/ as well as

  /\\fn .*swap(/

  and /(?<!std)::swap(/ search terms.