Whitespace cleanup

* remove trailing whitespace
* remove empty lines at the end of files

plugins/network/shorewall_acc

@@ -6,7 +6,7 @@
 # Released under the GPL v2
 import sys, commands, re
 accountingLineExp = re.compile(r"^\s*\d+[KMG]*\s+(\d+)([KMGT]*)\s+(\w+).*$")
- 
+
 def getBytesByChain():
     trafficCmd = "shorewall"
     status, output = commands.getstatusoutput("/sbin/shorewall show accounting 2>/dev/null")
@@ -41,7 +41,7 @@ def getBytesByChain():
     for name in chainNames:
         retval.append((name, chains[name]))
     return retval
- 
+
 if len(sys.argv) > 1:
     if sys.argv[1] == "autoconf":
         print "yes"
@@ -56,6 +56,6 @@ if len(sys.argv) > 1:
             print "%s.label %s" % (chain, chain)
             print "%s.cdef %s,8,*" % (chain, chain)
         sys.exit(0)
- 
+
 for chain, bytes in getBytesByChain():
     print "%s.value %i" % (chain, bytes)