vim-patch:7.4.365

Problem:    Crash when using ":botright split" when there isn't much space.
Solution:   Add a check for the minimum width/height. (Yukihiro Nakadaira)

https://code.google.com/p/vim/source/detail?r=v7-4-365
vim-patch:7.4.372

Problem:    When 'winminheight' is zero there might not be one line for the
            current window.
Solution:   Change the size computations. (Yukihiro Nakadaira)

https://code.google.com/p/vim/source/detail?r=v7-4-372
vim-patch:7.4.373

Problem:    Compiler warning for unused argument and unused variable.
Solution:   Add UNUSED.  Move variable inside #ifdef.

https://code.google.com/p/vim/source/detail?r=v7-4-373
vim-patch:7.4.377

Problem:    When 'equalalways' is set a split may report "no room" even though
            there is plenty of room.
Solution:   Compute the available room properly. (Yukihiro Nakadaira)

https://code.google.com/p/vim/source/detail?r=v7-4-377
Merge pull request #1168 from atwupack/vp-7.4.365

vim-patch:7.4.365, 7.4.372, 7.4.373, 7.4.377