Renamed mn_run.py -> mn, mn_clean.py -> mnclean; updated Makefle

It's possible that mn_clean is a bit easier to read; mnclean may be easier
to type, however.

Added variables to Makefile so that source files are listed in a single
location.

Makefile

 all: codecheck test
 
 clean:
-	rm -rf build dist build *.egg-info *.pyc
+	rm -rf build dist *.egg-info *.pyc
 
-codecheck: mininet/*.py mininet/test/*.py
-	pyflakes mininet/*.py mininet/test/*.py bin/*.py
-	pylint --rcfile=.pylint mininet/*.py mininet/test/*.py bin/*.py
-	pep8 --ignore=E251 mininet/*.py mininet/test/*.py bin/*.py
+MININET = mininet/*.py
+TEST = mininet/test/*.py
+BIN = bin/mn bin/mnclean
+PYSRC = $(MININET) $(TEST) $(BIN)
 
-test: mininet/*.py mininet/test/*.py
+codecheck: $(PYSRC)
+	pyflakes $(PYSRC)
+	pylint --rcfile=.pylint $(PYSRC)
+	pep8 --ignore=E251 $(PYSRC)
+
+test: $(MININET) $(TEST)
 	mininet/test/test_nets.py

custom/README

 This directory should hold configuration files for custom mininets.
 
-See custom_example.py, which loads the default minimal topology.  The advantage of defining a mininet in a separate file is that you then use the --custom option in mn_run.py to run the CLI or specific tests with it.
+See custom_example.py, which loads the default minimal topology.  The advantage of defining a mininet in a separate file is that you then use the --custom option in mn to run the CLI or specific tests with it.
 
 Each custom file must define a Mininet object for an 'mn' variable.
 
 To start up a mininet with this custom topology, do:
-  sudo mn_run.py --custom custom_example.py
+  sudo mn --custom custom_example.py
 

setup.py

@@ -5,7 +5,7 @@
 from os.path import join
 
 scripts = [join('bin', filename) for filename in
-            ['mn_run.py', 'mn_clean.py']]
+            ['mn', 'mnclean']]
 
 modname = distname = 'mininet'