THRIFT-1773. Revert "Thrift-1604:Python exxception handeling for changes from PEP3110"

This reverts commit 6c5ee6ad2067e245ab5364f9a6019d8b63d7ed52.

This commit is being reverted since it broke compatibility with
Python 2.4, which is the latest version included in RHEL5 releases.
diff --git a/lib/py/src/server/TProcessPoolServer.py b/lib/py/src/server/TProcessPoolServer.py
index 86c4312..7a695a8 100644
--- a/lib/py/src/server/TProcessPoolServer.py
+++ b/lib/py/src/server/TProcessPoolServer.py
@@ -59,7 +59,7 @@
                 self.serveClient(client)
             except (KeyboardInterrupt, SystemExit):
                 return 0
-            except Exception as x:
+            except Exception, x:
                 logging.exception(x)
 
     def serveClient(self, client):
@@ -74,7 +74,7 @@
                 self.processor.process(iprot, oprot)
         except TTransportException, tx:
             pass
-        except Exception as x:
+        except Exception, x:
             logging.exception(x)
 
         itrans.close()
@@ -106,7 +106,7 @@
                 break
             except (SystemExit, KeyboardInterrupt):
                 break
-            except Exception as x:
+            except Exception, x:
                 logging.exception(x)
 
         self.isRunning.value = False