Small fixes for tty and w32.

* lisp/menu-bar.el (showhide-tab-bar): Visible on tty too.
* lisp/tab-bar.el (tab-bar-mode): Add binding [(control shift tab)] for w32.
* lisp/tab-line.el (tab-line-add-tab): Use tmm-prompt for buffer-menu on tty.
* src/w32term.c (w32_read_socket): Fix tool-bar clicks.
1 job for feature/tabs in 66 minutes and 40 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Test
passed #3234
test-all

01:06:40