Open files for 'exec()' w/ universal newlines.

Fixes #130.

CHANGES.rst

@@ -4,6 +4,9 @@ Change History
 Unreleased
 ==========
 
+- Open files for ``exec()`` in universal newlines mode.  See 
+  https://github.com/buildout/buildout/issues/130
+
 - Add BUILDOUT_HOME as an alternate way to control how the user default
   configuration is found.
 

src/zc/buildout/easy_install.py

@@ -1268,9 +1268,8 @@ if len(sys.argv) > 1:
         sys.argv[:] = _args
         __file__ = _args[0]
         del _options, _args
-        __file__f = open(__file__)
-        exec(compile(__file__f.read(), __file__, "exec"))
-        __file__f.close(); del __file__f
+        with open(__file__, 'U') as __file__f:
+            exec(compile(__file__f.read(), __file__, "exec"))
 
 if _interactive:
     del _interactive
@@ -1289,7 +1288,8 @@ __file__ = %(__file__)r
 os.chdir(%(setupdir)r)
 sys.argv[0] = %(setup)r
 
-exec(compile(open(%(setup)r).read(), %(setup)r, 'exec'))
+with open(%(setup)r, 'U') as f:
+    exec(compile(f.read(), %(setup)r, 'exec'))
 """