.emacs_d/lisp/emojis.el: fix emoji history, at least for the current session
.emacs_d/yasnippet/snippets/cc-mode/setprop: add a setprop snippet
.sawfishrc: fix T1Wrench emoji
bin/adb-unroot: unroot my adb
bin/repo-sync: do branch only sync
bin/update-repo-projects: do repo sync

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