Run tests in parallel on Travis and in tox

Author: mdboom

.travis.yml

@@ -19,4 +19,4 @@ install:
 script:
   - mkdir ../tmp_test_dir
   - cd ../tmp_test_dir
-  - python ../matplotlib/tests.py -sv
+  - python ../matplotlib/tests.py -sv --processes=-1 --process-timeout=300

tox.ini

@@ -10,7 +10,7 @@ envlist = py26, py27, py31, py32
 changedir = /tmp
 commands =
     sh -c 'rm -f $HOME/.matplotlib/fontList*'
-    {envpython} {toxinidir}/tests.py
+    {envpython} {toxinidir}/tests.py --processes=-1 --process-timeout=300
 deps =
     nose
     numpy