bin/adb-back-partition: use root
bin/adb-push-partition: calc $2 from $1
bin/aof: support 7z files
bin/cd-adb: allow to specify elf/android/mol
bin/gerrit-do-review: add branch selection when following
bin/test-freq-current-temp.sh: allow no change freq
bin/update-repo-projects: do not exit when rebuilding kernel

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