For llvm-objdump and Mach-O files, update the printing of some thread states

For llvm-objdump and Mach-O files, update the printing of some thread states
from core files.  I tested this against the couple of core files that were
getting errors about unknown thread flavors and it now produce the same output as
the Xcode otool-classic(1) tool.  Since the core files are huge I didn’t include
them as test cases.

rdar://38216356

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@327077 91177308-0d34-0410-b5e6-96231b3b80d8