Rename requirement files.

ci/before_install_nonjython.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
 set -e
 
-cat requirements_python.txt >> requirements.txt
+cat requirements-python.txt >> requirements.txt
 ln -s $VIRTUAL_ENV $HOME/myvirtualenv

ci/simulate_travis_jython.sh

@@ -36,7 +36,7 @@ source $HOME/myvirtualenv/bin/activate
 
 pip install jip==0.7
 pip install -e .
-pip install -r requirements_test.txt
+pip install -r test-requirements.txt
 jip install org.xerial:sqlite-jdbc:3.7.2
 jip install org.hsqldb:hsqldb:1.8.0.10