The flag enables the current local directory set by ":lcd" to be saved
to views which is the current default behaviour. The option can be
removed to disable this behaviour.

closes #7435

vim-patch:8.0.1289

Fix test failures found in Debian builds, closes #7522

Fixed-size buffers and lfs.currentdir().. does not compute. The tests would fail
if the current working directory was longer than expected.

closes #7538
Fix wrong window references from #7440

Remove some eager resizing. Still mostly doesn't address #4997.

Fixes test failures like

    test/functional/terminal/cursor_spec.lua @ 62: terminal cursor with number column is positioned correctly when focused
    ./test/functional/ui/screen.lua:302: Row 2 did not match.
    Expected:
      |{7:  1 }tty ready                                     |
      |*{7:  2 }{1: }                                             |
      |{7:  3 }                                              |
      |{7:  4 }                                              |
      |{7:  5 }                                              |
      |{7:  6 }                                              |
      |{3:-- TERMINAL --}                                    |
    Actual:
      |{7:  1 }tty ready                                     |
      |*{7:  2 }rows: 6, cols: 46                             |
      |{7:  3 }{1: }                                             |
      |{7:  4 }                                              |
      |{7:  5 }                                              |
      |{7:  6 }                                              |
      |{3:-- TERMINAL --}                                    |

This fixes an apparent difference in behavior between Lua and LuaJIT.
Lua fails to format nil:

    test/functional/terminal/tui_spec.lua:381: bad argument #2 to 'format' (string expected, got nil)