MacPorts 2.11.1

Changes since 2.11.0:

• A warning is printed if the home directory of the macports user
  can't be updated, rather than installation failing.
  (#72676, jmr in d1e4f04, 639d403)

• The xinstall command no longer fails on macOS 10.12.
  (#72680, jmr in 22a8d57)

• Syncing will now create ${prefix}/var/macports/home if it doesn't
  exist, to avoid failing. (#72681, jmr in bda1cc8)

• Syncing now adjusts the ownership and permissions on any existing
  PortIndex if needed to avoid the portindex command failing when
  run unprivileged. (#72677, jmr in 2810b15)