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