Don't require a framework builds, and produce .bundle files

--- siputils.py
+++ siputils.py
@@ -818,8 +818,6 @@
         """
         if self.generator in ("MSVC", "MSVC.NET", "BMAKE"):
             plib = clib + ".lib"
-        elif sys.platform == "darwin" and framework:
-            plib = "-framework " + clib
         else:
             plib = "-l" + clib
 
@@ -836,8 +834,6 @@
 
         if self.generator in ("MSVC", "MSVC.NET", "BMAKE"):
             prl_name = os.path.join(self.config.qt_lib_dir, clib + ".prl")
-        elif sys.platform == "darwin" and framework:
-            prl_name = os.path.join(self.config.qt_lib_dir, clib + ".framework", clib + ".prl")
         else:
             prl_name = os.path.join(self.config.qt_lib_dir, "lib" + clib + ".prl")
 
@@ -1396,9 +1392,6 @@
             # 'real_prefix' exists if virtualenv is being used.
             dl = getattr(sys, 'real_prefix', sys.exec_prefix).split(os.sep)
 
-            if "Python.framework" not in dl:
-                error("SIP requires Python to be built as a framework")
-
             self.LFLAGS.append("-undefined dynamic_lookup")
 
         Makefile.finalise(self)
@@ -1478,7 +1471,7 @@
             if sys.platform == "win32":
                 ext = "pyd"
             elif sys.platform == "darwin":
-                ext = "so"
+                ext = "bundle"
             elif sys.platform == "cygwin":
                 ext = "dll"
             else: