Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

arm-baserelocs.test
# RUN: llvm-readobj --coff-basereloc %p/Inputs/trivial.exe.coff-arm | FileCheck %s

# CHECK: Entry {
# CHECK:  Type: ARM_MOV32(T)
# CHECK:  Address: 0x9390
# CHECK: }