Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

header-import.m
// RUN: rm -rf %t
// RUN: %clang_cc1 -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -F %S/Inputs -I %S/Inputs -verify %s
// expected-no-diagnostics

#import "point.h"
@import Module;
#import "point.h"