.emacs_d/lisp/bhj-defines.el: allow user specified grep tag
.emacs_d/yasnippet/snippets/message-mode/toolsteam: add a new colleague
bin/f: sort the found files according which one is last updated
etc/custom.el: search msdn use a local variable

Signed-off-by: Bao Haojun <baohaojun@gmail.com>