* master:
  bigfile: Note that ramh_alloc_page does not add the page to any lists
  bigfile: Unstub ram_close
  bigfile/test/test_ram: Don't forget to free allocated Page structs
  bigfile: RAM must be explicitly free'ed after close
  bigfile/test: Don't forget to close opened RAM
  tests: TSAN no longer fails on test_virtmem
  tox: Don't duplicate setup.py on which for-tests dependencies we need
  3rdparty/ccan: Update