Merging a bugfix branch.

This branch fixes a number of small tickets.

IPython/Magic.py

@@ -1675,7 +1675,7 b' Currently the magic system has the following functions:\\n"""'
                                    exit_ignore=exit_ignore)
                             t1 = clock2()
                             t_usr = t1[0]-t0[0]
-                            t_sys = t1[1]-t1[1]
+                            t_sys = t1[1]-t0[1]
                             print "\nIPython CPU timings (estimated):"
                             print "  User  : %10s s." % t_usr
                             print "  System: %10s s." % t_sys
@@ -1687,7 +1687,7 b' Currently the magic system has the following functions:\\n"""'
                                        exit_ignore=exit_ignore)
                             t1 = clock2()
                             t_usr = t1[0]-t0[0]
-                            t_sys = t1[1]-t1[1]
+                            t_sys = t1[1]-t0[1]
                             print "\nIPython CPU timings (estimated):"
                             print "Total runs performed:",nruns
                             print "  Times : %10s    %10s" % ('Total','Per run')

IPython/Shell.py

@@ -292,17 +292,19 b' if HAS_CTYPES:'
         """raises the exception, performs cleanup if needed"""
         if not inspect.isclass(exctype):
             raise TypeError("Only types can be raised (not instances)")
-        res = ctypes.pythonapi.PyThreadState_SetAsyncExc(tid,
+        # Explicit cast to c_long is necessary for 64-bit support:
+        # See https://bugs.launchpad.net/ipython/+bug/237073
+        res = ctypes.pythonapi.PyThreadState_SetAsyncExc(ctypes.c_long(tid),
                                                          ctypes.py_object(exctype))
         if res == 0:
             raise ValueError("invalid thread id")
         elif res != 1:
-            # """if it returns a number greater than one, you're in trouble, 
-            # and you should call it again with exc=NULL to revert the effect"""
+            # If it returns a number greater than one, you're in trouble, 
+            # and you should call it again with exc=NULL to revert the effect
             ctypes.pythonapi.PyThreadState_SetAsyncExc(tid, 0)
             raise SystemError("PyThreadState_SetAsyncExc failed")
 
-    def sigint_handler (signum,stack_frame):
+    def sigint_handler(signum,stack_frame):
         """Sigint handler for threaded apps.
 
         This is a horrible hack to pass information about SIGINT _without_
@@ -321,7 +323,7 b' if HAS_CTYPES:'
             Term.cout.flush()
 
 else:
-    def sigint_handler (signum,stack_frame):
+    def sigint_handler(signum,stack_frame):
         """Sigint handler for threaded apps.
 
         This is a horrible hack to pass information about SIGINT _without_

IPython/background_jobs.py

@@ -248,7 +248,7 b' class BackgroundJobManager:'
         self._update_status()
         new_comp = self._group_report(self._comp_report,'Completed')
         new_dead = self._group_report(self._dead_report,
-                                      'Dead, call job.traceback() for details')
+                                      'Dead, call jobs.traceback() for details')
         self._comp_report[:] = []
         self._dead_report[:] = []
         return new_comp or new_dead
@@ -340,7 +340,7 b' class BackgroundJobBase(threading.Thread):'
     stat_created   = 'Created'; stat_created_c = 0
     stat_running   = 'Running'; stat_running_c = 1
     stat_completed = 'Completed'; stat_completed_c = 2
-    stat_dead      = 'Dead (Exception), call job.traceback() for details'
+    stat_dead      = 'Dead (Exception), call jobs.traceback() for details'
     stat_dead_c = -1
 
     def __init__(self):
@@ -391,7 +391,7 b' class BackgroundJobBase(threading.Thread):'
             self.status    = BackgroundJobBase.stat_dead
             self.stat_code = BackgroundJobBase.stat_dead_c
             self.finished  = None
-            self.result    = ('<BackgroundJob died, call job.traceback() for details>')
+            self.result    = ('<BackgroundJob died, call jobs.traceback() for details>')
             self._tb       = self._make_tb()
         else:
             self.status    = BackgroundJobBase.stat_completed