PING: [patch] skip tests that use cd for remote hosts

[Janis Johnson]

I'd like to ping https://sourceware.org/ml/gdb-patches/2014-06/msg00563.html .

As I said in the original submission, the patch skips three tests that,
when run on a remote host, fail and also leave copies of files in the
source directory if it is direct mounted on the remote host.

After sending that in I tried using a local override of remote_download,
but it turns out that GDB uses that procedure directly in many places
and relies on its odd behavior.

Is the patch OK?

Janis Johnson
CodeSourcery / Mentor Graphics