.zshrc: unalias mv and remove git_prompt_string
x64-upstream: Rebase to 259174
x64-upstream: Update status of patches
install.py: Add package libicu-dev
x64-upstream: Rebase to r259808

v8 patches have been synced by upstream, so the patch is removed.
fix webaudio for android x64
Merge pull request #15 from jchen10/master

fix webaudio for android x64
x64-upstream: Add unit tests related code