make exactly 5 part as travis-ci run only 5 jobs in parallel.

Author: nouiz

.travis.yml

@@ -26,8 +26,7 @@ env:
   - PART="test.py:test_logistic_sgd test.py:test_logistic_cg test.py:test_mlp test.py:test_convolutional_mlp test.py:test_dA"
   - PART="test.py:test_SdA"
   - PART="test.py:test_dbn"
-  - PART="test.py:test_rbm"
-  - PART="test.py:test_rnnrbm"
+  - PART="test.py:test_rbm test.py:test_rnnrbm"
   - PART="-e test.py"
 
 #i7-2600K CPU @ 3.40GHz