Merge from origin/emacs-26

8c8b673288 Fix backing up remote files in local directories on MS-Win...
8eb6870be6 Fix vertical cursor motion in pixel-scroll.el
625e84f156 Fix typos in doc strings of message.el
9292276a44 Fix a typo in the Emacs manual
42509c0649 Improve the documentation of 'table-insert-sequence'
93dc7ae4a4 Port better to QNX
ad99550610 Make tramp-test42-auto-load more robust
af0ce33d08 ; * lisp/composite.el (find-composition): Fix a typo in la...
bdbcdbac43 Avoid assertions in find-composition

diff --cc configure.ac
Simple merge

diff --cc doc/emacs/text.texi
Simple merge

diff --cc lisp/files.el
Simple merge

diff --cc lisp/gnus/message.el
Simple merge

diff --cc test/lisp/net/tramp-tests.el
index 044ab9329ffdeebfa9a426acd2957bb7e4157e8a,b0fe3f83e9706a5372a1731448127896e3a43438..5699ab4b237ff162ef3db0a1519f0e021967b44c
--- 1/test/lisp/net/tramp-tests.el
--- 2/test/lisp/net/tramp-tests.el
+++ b/test/lisp/net/tramp-tests.el
@@@ -4622,13 -4611,11 +4622,11 @@@ process sentinels.  They shall not dist
            (ignore-errors (delete-process (get-buffer-process buf)))
            (ignore-errors (kill-buffer buf)))
          (ignore-errors (cancel-timer timer))
 -        (ignore-errors (delete-directory tmp-name 'recursive))))))
 +        (ignore-errors (delete-directory tmp-name 'recursive)))))))
  
+ ;; This test is inspired by Bug#29163.
  (ert-deftest tramp-test42-auto-load ()
    "Check that Tramp autoloads properly."
-   (skip-unless (tramp--test-enabled))
-   (skip-unless (not (tramp--test-mock-p)))
- 
    (let ((default-directory (expand-file-name temporary-file-directory))
        (code
         (format