patch 8.2.2914: cannot paste a block without adding padding

Problem:    Cannot paste a block without adding padding.
Solution:   Add "zp" and "zP" which paste without adding padding. (Christian
            Brabandt, closes #8289)

runtime/doc/change.txt

@@ -1126,6 +1126,11 @@ inside of strings can change!  Also see 'softtabstop' option. >
 			Using the mouse only works when 'mouse' contains 'n'
 			or 'a'.
 
+["x]zp		    or					*zp* *zP*
+["x]zP			Like "p" and "P", except without adding trailing spaces
+			when pasting a block.  Thus the inserted text will not
+			always be a rectangle.
+
 You can use these commands to copy text from one place to another.  Do this
 by first getting the text into a register with a yank, delete or change
 command, then inserting the register contents with a put command.  You can
@@ -1165,6 +1170,9 @@ a register, a paste on a visual selected area will paste that single line on
 each of the selected lines (thus replacing the blockwise selected region by a
 block of the pasted line).
 
+Use |zP|/|zp| to paste a blockwise yanked register without appending trailing
+spaces.
+
 							*blockwise-register*
 If you use a blockwise Visual mode command to get the text into the register,
 the block of text will be inserted before ("P") or after ("p") the cursor

runtime/doc/index.txt

@@ -864,6 +864,8 @@ tag		char	      note action in Normal mode	~
 |zm|		zm		   subtract one from 'foldlevel'
 |zn|		zn		   reset 'foldenable'
 |zo|		zo		   open fold
+|zp|		zp		   paste in block-mode without trailing spaces
+|zP|		zP		   paste in block-mode without trailing spaces
 |zr|		zr		   add one to 'foldlevel'
 |zs|		zs		   when 'wrap' off scroll horizontally to
 				   position the cursor at the start (left