Merge from origin/emacs-26

Merge from origin/emacs-26

63ba73a Fix documentation of ':propertize' in mode-line-format
22aa665 Reject invalid 5-byte sequences when detecting UTF-8 encoding
0d3c358 Fix 'replace-buffer-contents' in multibyte buffers
c79a627 Update etc/NEWS for mail-source-movemail-program change
63f1dc4 Improve movemail default
0b1a2ae Delete description of deleted Customize functions
fcd66d0 Keep vc-print-log from putting point at buffer end (Bug#31764)

Conflicts:
	etc/NEWS