Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

cc1as-asm.s
// Run cc1as asm output path just to make sure it works
// REQUIRES: x86-registered-target
// RUN: %clang -cc1as -triple x86_64-apple-macosx10.10.0 -filetype asm %s -o /dev/null