perf: python3 + tests attr.py failing

[Arnaldo Carvalho de Melo]

Noticed this now when building with PYTHON=python3, can you take a look?
For now I'm reinstalling python2-devel and building with it, i.e.
removing that PYTHON=python3 make command line variable.

[root@quaco ~]# perf test -v perf_event_attr
16: Setup struct perf_event_attr                          :
--- start ---
test child forked, pid 23937
  File "/home/acme/libexec/perf-core/tests/attr.py", line 325
    except Unsup, obj:
                ^
SyntaxError: invalid syntax
test child finished with -1
---- end ----
Setup struct perf_event_attr: FAILED!
[root@quaco ~]# find

Reverting back to building with python2-devel makes it work:

make O=/tmp/build/perf -C tools/perf install-bin

[acme@quaco perf]$ ldd ~/bin/perf | grep python
	libpython2.7.so.1.0 => /lib64/libpython2.7.so.1.0 (0x00007fe283792000)
[acme@quaco perf]$

[root@quaco ~]# perf test perf_event_attr
16: Setup struct perf_event_attr                          : Ok
[root@quaco ~]#

- Arnaldo