merge head from windows/linux
[EMACS]modify HOME and END key binding on OSX
[EMACS]speedbar add extension for .php and .inc
[Emacs]speedbar mode bug fix; enable linum-mode
[Emacs]turn off linum-mode in speedbar mode
[Emacs]speedbar mode size/position/keybinding; refactor key bindings; refactor ecb setting
Merge branch 'master' of https://github.com/baodepei/working_environment
[EMACS]add powershell mode
merge 60d19da from master
[Emacs] remove elpa archive-contents
Merge branch 'master' into windows