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/bitehist.py b/examples/tracing/bitehist.py
index c8c7f7a..410424b 100755
--- a/examples/tracing/bitehist.py
+++ b/examples/tracing/bitehist.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
#
# bitehist.py Block I/O size histogram.
# For Linux, uses BCC, eBPF. Embedded C.