Rename setup.py template to setup.py.tmpl to avoid confusion

capnp/templates/setup.py.tmpl

@@ -0,0 +1,26 @@
+#!/usr/bin/env python
+from distutils.core import setup
+from Cython.Build import cythonize
+import os
+import re
+
+
+files = [{% for f in code.requestedFiles %}"{{f.filename}}",{% endfor %}]
+
+for f in files:
+  cpp_file = f + '.cpp'
+  if not os.path.exists(cpp_file):
+    if not os.path.exists(f + '.c++'):
+      raise RuntimeError("You need to run `capnp compile -oc++` in addition to `-ocython` first.")
+    os.rename(f + '.c++', cpp_file)
+
+    with open(f + '.h', "r") as file:
+        lines = file.readlines()
+    with open(f + '.h', "w") as file:
+        for line in lines:
+            file.write(re.sub(r'Builder\(\)\s*=\s*delete;', 'Builder() = default;', line))
+
+setup(
+    name="{{code.requestedFiles[0] | replace('.', '_')}}",
+    ext_modules=cythonize('*_capnp_cython.pyx', language="c++")
+)