cross-build/Make: Update cross build to properly forward ARCH and
TARGETS_TO_BUILD variables to build tools submake, and also tweak echo command
to indicate when we are compiling/etc build tools.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144419 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed