vim-patch:7.4.267

Problem:    The '[ mark is in the wrong position after "gq". (Ingo Karkat)
Solution:   Add the setmark argument to do_join(). (Christian Brabandt)

https://code.google.com/p/vim/source/detail?r=75f222d67cea335efbe0274de6340dba174c1e7e
Merge #756 'vim-patch:7.4.267'