updated for version 7.4.454
Problem:    When using a Visual selection of multiple words and doing CTRL-W_]
	    it jumps to the tag matching the word under the cursor, not the
	    selected text.  (Patrick hemmer)
Solution:   Do not reset Visual mode. (idea by Christian Brabandt)
Added tag v7-4-454 for changeset 0cdff7c26855
updated for version 7.4.455
Problem:    Completion for :buf does not use 'wildignorecase'. (Akshay H)
Solution:   Pass the 'wildignorecase' flag around.
Added tag v7-4-455 for changeset ebc72764fa1e
updated for version 7.4.456
Problem:    'backupcopy' is global, cannot write only some files in a
	    different way.
Solution:   Make 'backupcopy' global-local. (Christian Brabandt)
Added tag v7-4-456 for changeset 54194bd6ed60
updated for version 7.4.457
Problem:    Using getchar() in an expression mapping may result in
	    K_CURSORHOLD, which can't be recognized.
Solution:   Add the <CursorHold> key.  (Hirohito Higashi)
Added tag v7-4-457 for changeset 96761b6789f6
updated for version 7.4.458
Problem:    Issue 252: Cursor moves in a zero-height window.
Solution:   Check for zero height. (idea by Christian Brabandt)
Added tag v7-4-458 for changeset fe1827921d50
updated for version 7.4.459
Problem:    Can't change the icon after building Vim.
Solution:   Load the icon from a file on startup. (Yasuhiro Matsumoto)
Added tag v7-4-459 for changeset 7816c24ff890
Merge remote-tracking branch 'upstream/master' into all