updated for version 7.3.852
Problem:    system() breaks clipboard text. (Yukihiro Nakadaira)
Solution:   Use Xutf8TextPropertyToTextList(). (Christian Brabandt)
	    Also do not put the text in the clip buffer if conversion fails.
Added tag v7-3-852 for changeset 3fd805ca2a6a
updated for version 7.3.853
Problem:    Using "ra" in multiple lines on multi-byte characters leaves a few
	    characters not replaced.
Solution:   Adjust the end column only in the last line. (Yasuhiro Matsumoto)
Added tag v7-3-853 for changeset eea32254940f
updated for version 7.3.854
Problem:    After using backspace in insert mode completion, CTRL-N and CTRL-P
	    do not highlight the right entry. (Olivier Teuliere)
Solution:   Set the current item to the shown item after using backspace.
Added tag v7-3-854 for changeset 14cdb6e4d5b8