patch 7.4.2226

Problem:    The field names used by getbufinfo(), gettabinfo() and
            getwininfo() are not consistent.
Solution:   Use bufnr, winnr and tabnr. (Yegappan Lakshmanan)

runtime/doc/eval.txt

@@ -4004,6 +4004,7 @@ getbufinfo([{dict}])
 
 		Each returned List item is a dictionary with the following
 		entries:
+			bufnr		buffer number.
 			changed		TRUE if the buffer is modified.
 			changedtick	number of changes made to the buffer.
 			hidden		TRUE if the buffer is hidden.
@@ -4011,7 +4012,6 @@ getbufinfo([{dict}])
 			lnum		current line number in buffer.
 			loaded		TRUE if the buffer is loaded.
 			name		full path to the file in the buffer.
-			nr		buffer number.
 			options		dictionary of buffer local options.
 			signs		list of signs placed in the buffer.
 					Each list item is a dictionary with