[RFC] vim-patch:7.4.301

Merging vim-patch:7.4.301

Problem:    Still a scrolling problem when loading a session file.
Solution:   Fix off-by-one mistake. (Nobuhiro Takasaki)

https://code.google.com/p/vim/source/detail?r=8cb42aa3c4957a543e5dffe307475dbab969612f