vim-patch:7.4.279

Problem:    globpath() returns a string, making it difficult to get a
            list of matches.  (Greg Novack)
Solution:   Add an optional argument like with glob().  (Adnan Zafar)

https://code.google.com/p/vim/source/detail?r=8e9db1f27a0063df023cc05a760fce73255dad24
Document globpath().
Simplify globpath().

Factor out common subexpression: `WILD_SILENT|expand_options`.

Prefer `continue` to excessive indentation in loop.