vim-patch:7.4.296

Problem:    Can't run tests on Solaris.
Solution:   Change the way VIMRUNTIME is set. (Laurent Blume)

https://code.google.com/p/vim/source/detail?r=v7-4-296
Merge pull request #1100 from atwupack/vp-7.4.296

vim-patch:7.4.296