[RFC] vim-patch:7.4.298

Merging vim-patch:7.4.298

Problem:    Can't have a funcref start with "t:".
Solution:   Add "t" to the list of accepted names. (Yukihiro Nakadaira)

https://code.google.com/p/vim/source/detail?r=156f891d520e93eab5d3ce02784660fb13a3b0d3