Force to use always the same .tex filename output

It differs in Sphinx1.8 and the rest. So, forcing its name to be always the same
in tests.

Author: humitos

tests/examples/default/conf.py

@@ -5,3 +5,8 @@
     'sphinx.ext.autosectionlabel',
     'hoverxref.extension',
 ]
+
+latex_documents = [
+    (master_doc, 'test.tex', u'test Documentation',
+     u'test', 'manual'),
+]

tests/test_internals.py

@@ -18,7 +18,7 @@
 )
 def test_dont_override_translator_non_html_builder(app, status, warning):
     app.build()
-    path = app.outdir / 'python.tex'
+    path = app.outdir / 'test.tex'
     assert path.exists() is True
     content = open(path).read()