Unify python executables to use `#!/usr/bin/env python` shebang (#2102)
* fixed shebangs in tools (and lib)
* fixed shebangs in examples
* do not mangle shebangs in rpm spec
* renamed style-check.sh to c-style-check.sh
* factored out python linter to a separate file
* added shebang validation to the py-style-check
* added shebangs to all python executables
diff --git a/examples/tracing/task_switch.py b/examples/tracing/task_switch.py
index 161edfb..46d43ba 100755
--- a/examples/tracing/task_switch.py
+++ b/examples/tracing/task_switch.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
# Copyright (c) PLUMgrid, Inc.
# Licensed under the Apache License, Version 2.0 (the "License")