Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

usingnamespace.test
; REQUIRES: diasdk

; RUN: llvm-pdbutil pretty -module-syms %p/Inputs/UsingNamespaceTest.pdb > %t
; RUN: FileCheck -input-file=%t %s

; CHECK: ---SYMBOLS---
; CHECK-NEXT: {{.*}}UsingNamespaceTest.obj
; CHECK-DAG: using namespace NS