chromium.py: Fix the issue after android_gyp is not supported
.zshrc: Make default dir to be project
chromium.py: Change the condition to use android_gyp
command.py: Correct the command of remote tar
util.py: Add package_installed and send_mail
install.py: Remove package_installed as it's in util.py
webcatch: Send mail if failed
x64-upstream: Use send_mail in util.py