Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

metadata.ll
; RUN: llvm-as < %s | llvm-dis -disable-output
; RUN: verify-uselistorder < %s

!llvm.foo = !{!0}
!0 = !{i32 42}
@my.str = internal constant [4 x i8] c"foo\00"