gdb/testsuite/
2013-03-13  Yao Qi  <yao@codesourcery.com>

	* gdb.trace/tsv.exp: Remove code unrelated to testing TSV.
	Replace some "gdb_test" with "gdb_test_no_output".
	* tracepoint.c (tfile_get_trace_state_variable_value): Look for
	the last matched 'V' blcok in trace frame.

gdb/gdbserver:

	* tracepoint.c (traceframe_read_tsv): Look for the last matched
	'V' block in trace frame.

gdb/testsuite:

	* gdb.trace/tsv.exp (check_tsv): New.
	(top level): Save a tfile on current trace session. Call
	check_tsv on live target.  Load the tfile with target tfile
	and call check_tsv again.