Add/fix shebang in python scripts, add execute permission (linux), remove whitespace/tabs at end of line

tools/parse_lookup_log.py

@@ -1,3 +1,4 @@
+#!/usr/bin/env python
 # this is meant to parse the dht_lookups.log generated by parse_dht_log.py
 
 import os
@@ -82,14 +83,14 @@ for l in f:
 		dst = '0.0.0.0'
 		if not dst in nodes:
 			nodes[dst] = { 'conns': set(), 'p': p, 'c': 'blue', 's': 'circle'}
-		
+
 		p = calculate_pos(l[2], 25)
 		dst = '255.255.255.255'
 		if not dst in nodes:
 			nodes[dst] = { 'conns': set(), 'p': p, 'c': 'yellow', 's': 'circle'}
 	elif kind == '->':
 		dst = l[3]
-		
+
 		if not dst in nodes:
 			src = get_origin(dst)
 			p = calculate_pos(l[2], int(l[1]))