* debian/diff/0001-JOBS-Fix-dowait-signal-race.diff,
  debian/diff/0002-SIGNAL-Remove-EXSIG.diff: remove (closes: #581425).
* debian/diff/: remove patches with reverts (0009, 0013, 0015, 0018,
  0019).
* debian/diff/0010-SHELL-Add-preliminary-LINENO-support.diff: remove
  (re-opens: #540685, closes: #582952).
* debian/diff/0015--BUILTIN-Use-TMPDIR-in-mkbuiltins.diff,
  debian/diff/0016--BUILTIN-Make-trap-signal-name-number-...diff,
  debian/diff/0017--JOBS-Fix-for-job-control-off-warning.diff: new;
  cherry-picked from upstream git.