fix typo in Makefile and remove make logfile after run

Demos/embed/Makefile

 # Makefile for creating our standalone Cython program
 PYTHON=python
-PYVERSION=$(shell ($PYTHON) -c "import sys; print(sys.version[:3])")
+PYVERSION=$(shell $(PYTHON) -c "import sys; print(sys.version[:3])")
 PYPREFIX=$(shell $(PYTHON) -c "import sys; print(sys.prefix)")
 LINKFORSHARED=$(shell $(PYTHON) -c "import distutils.sysconfig; print(distutils.sysconfig.get_config_var('LINKFORSHARED'))")
 INCLUDES=-I$(PYPREFIX)/include/python$(PYVERSION)

runtests.py

@@ -633,6 +633,10 @@ class EmbedTest(unittest.TestCase):
     def test_embed(self):
         self.assert_(os.system(
             "make PYTHON='%s' test > make.output" % sys.executable) == 0)
+        try:
+            os.remove('make.output')
+        except OSError:
+            pass
 
 class MissingDependencyExcluder:
     def __init__(self, deps):