Modify TestSettings test for stderr.txt/stdout.txt to ignore an
optional path prior to the file base name.

On Linux x86_64 (Ubuntu 12.04) I am sometimes getting a full path
on the stderr.txt.  This changes the test for target.error-path and
target.output-path settings to ignore any optional directory before
the expected file base name.



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@207272 91177308-0d34-0410-b5e6-96231b3b80d8
Prevent TestLldbGdbServer shutdown cleanup failures from failing the test.

Adds try/except blocks around clean-up code. Prevents a race between gdb
remote kill command reception by llgs (which leads llgs to shut down)
and the pexpect server kill (which can fail if the kill command handling
completes first). Warnings are emitted on the logger for any clean-up
code that fails.



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@207273 91177308-0d34-0410-b5e6-96231b3b80d8