misc: updated shabang for python script

The default python on MacOS doesn’t have an alias to python2.
The official python version supported in gem5 is Python2.7.

This patch updates the shabang according to the version required in gem5.

Change-Id: I9533c0f7858b5b3cab0ef101be1ee5cd718105b0
Reviewed-on: https://gem5-review.googlesource.com/c/15375
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>

misc: Update #!env calls for python to explicit version

In some newer Linux distributions, env python default to Python 3.0. This
patch explicitly uses "python2" instead of just "python" for all scripts
that use #!

Reported-by: Sanchayan Maity <maitysanchayan@gmail.com>
Signed-off-by: Jason Lowe-Power <jason@lowepower.com>

Updated Authors from bk prs info

Cleanup copyright stuff. Add our copyright files that
are ours

arch/alpha/alpha_linux_process.hh:
arch/alpha/alpha_tru64_process.hh:
base/loader/object_file.cc:
base/loader/object_file.hh:
sim/process.cc:
sim/process.hh:
remove $Id$ string
cpu/ozone/cpu.cc:
cpu/ozone/cpu_impl.hh:
cpu/ozone/ea_list.cc:
cpu/ozone/ea_list.hh:
kern/linux/sched.hh:
kern/linux/thread_info.hh:
Add M5 Copyright
cpu/trace/opt_cpu.cc:
dev/rtcreg.h:
nit
kern/linux/aligned.hh:
kern/linux/hwrpb.hh:
util/oprofile-top.py:
util/stats/db.py:
util/stats/dbinit.py:
util/stats/display.py:
util/stats/info.py:
util/stats/print.py:
util/stats/stats.py:
Cleanup copyright

added copyright

kern/linux/sched.hh:
kern/linux/thread_info.hh:
got rid of everything but exactly what we needed
util/categories.py:
newest version from one of my repositories

update profile code to use shared categories file

util/stats/stats.py:
add database command to help