perf tests: Add thread maps lookup automated tests

Adding automated test for memory maps lookup within multiple machines
threads.

The test creates 4 threads and separated memory maps. It checks that we
could use thread__find_addr_map function with thread object based on TID
to find memory maps.

Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1397490723-1992-2-git-send-email-jolsa@redhat.com
Signed-off-by: Jiri Olsa <jolsa@kernel.org>

tools/perf/perf.h

@@ -15,6 +15,9 @@
 #ifndef __NR_futex
 # define __NR_futex 240
 #endif
+#ifndef __NR_gettid
+# define __NR_gettid 224
+#endif
 #endif
 
 #if defined(__x86_64__)
@@ -29,6 +32,9 @@
 #ifndef __NR_futex
 # define __NR_futex 202
 #endif
+#ifndef __NR_gettid
+# define __NR_gettid 186
+#endif
 #endif
 
 #ifdef __powerpc__