Fix bug in stackless support, remove prints, ad update the operating systems in setup.py

eventlet/api.py

@@ -44,10 +44,10 @@ except ImportError:
             greenlet = sys.modules['greenlet']
         except ImportError:
             try:
-                import support.stackless
-                support.stackless.emulate()
+                import support.stacklesss
+                support.stacklesss.emulate()
                 greenlet = sys.modules['greenlet']                
-            except ImportError:
+            except ImportError, e:
                 raise ImportError("Unable to find an implementation of greenlet.")
 
 

eventlet/support/stacklesss.py

@@ -48,7 +48,7 @@ class FirstSwitch(object):
         self.gr = gr
 
     def __call__(self, *args, **kw):
-        print "first call", args, kw
+        #print "first call", args, kw
         gr = self.gr
         del gr.switch
         run, gr.run = gr.run, None
@@ -72,7 +72,7 @@ class greenlet(object):
         self.switch = FirstSwitch(self)
 
     def switch(self, *args):
-        print "switch", args
+        #print "switch", args
         global caller
         caller = stackless.getcurrent()
         coro_args[self] = args

setup.py

@@ -22,6 +22,8 @@ setup(
     classifiers=[
     "License :: OSI Approved :: MIT License",
     "Programming Language :: Python",
+    "Operating System :: MacOS :: MacOS X",
+    "Operating System :: POSIX",
     "Topic :: Internet",
     "Topic :: Software Development :: Libraries :: Python Modules",
     "Intended Audience :: Developers",