Use tempfile.mkstemp to stay compatible with Python 2.5 (it does …

…not have the ``delete`` option on ``NamedTemporaryFile``).

src/chameleon/loader.py

@@ -97,19 +97,19 @@ def build(self, source, filename):
             base, ext = os.path.splitext(filename)
             name = os.path.join(self.path, base + ".py")
             log.debug("writing source to disk (%d bytes)." % len(source))
-            temp = tempfile.NamedTemporaryFile(
-                prefix=base, suffix='.tmp', dir=self.path, delete=False)
+            fd, fn = tempfile.mkstemp(prefix=base, suffix='.tmp', dir=self.path)
+            temp = open(fn, 'w')
             try:
                 try:
                     temp.write("%s\n" % '# -*- coding: utf-8 -*-')
                     temp.write(source)
                 finally:
                     temp.close()
             except:
-                os.remove(temp.name)
+                os.remove(fn)
                 raise
 
-            os.rename(temp.name, name)
+            os.rename(fn, name)
             log.debug("compiling %s into byte-code..." % filename)
             py_compile.compile(name)