[PATCH] fix info address for thread local vars

[Michael Elizabeth Chastain]

Elena Z writes:

  info address me
  Symbol "me" is a variable with complex or multiple locations (DWARF2).
  (gdb) FAIL: gdb.threads/tls.exp: info address me

I think this is a KFAIL.  Assuming that the information coming out of the
compiler is correct, then it is not an XFAIL.

The PR would be easy: gdb can't handle variables with complex or
multiple locations.

On my next spin I'll report on the numerous red hat linux 8
configurations and I can submit KFAIL-ish patches for the new tests.

Michael C