Ignore conflicting nose tests in py-nose and py-matplotlib.

var/spack/packages/py-matplotlib/package.py

@@ -8,7 +8,8 @@ class PyMatplotlib(Package):
 
     version('1.4.2', '7d22efb6cce475025733c50487bd8898')
 
-    extends('python')
+    extends('python', ignore=r'bin/nosetests.*$')
+
     depends_on('py-pyside')
     depends_on('py-ipython')
     depends_on('py-pyparsing')

var/spack/packages/py-nose/package.py

@@ -9,7 +9,7 @@ class PyNose(Package):
 
     version('1.3.4', '6ed7169887580ddc9a8e16048d38274d')
 
-    extends('python')
+    extends('python', ignore=r'bin/nosetests.*$')
     depends_on('py-setuptools')
 
     def install(self, spec, prefix):