Use printf instead of "echo -e" or "echo -n".

Not all echo commands support "-e". On the other hand, printf
command is in POSIX, so it's more portable than "echo -e".

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285151 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed