Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

CMakeLists.txt
foreach(t ${LLVM_TARGETS_TO_BUILD})
  if(IS_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/${t})
    add_subdirectory(${t})
  endif()
endforeach()