Fixed run_scapy.bat to work under Python 2.6

The old batch file worked on Python 2.5 but lead to the
following error under Python 2.6:
c:\Python26\python.exe: scapy is a package and cannot be directly executed
New file should work under both versions.

Author: dloss

run_scapy.bat

@@ -1,3 +1,3 @@
 @echo off
 set PYTHONPATH=%cd% 
-python -m scapy
+python -m scapy.__init__