Merged revisions 83393,83396,83398,83404-83405,83408 via svnmerge from
svn+ssh://svn.python.org/python/branches/py3k

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  r83393 | georg.brandl | 2010-08-01 10:35:29 +0200 (So, 01 Aug 2010) | 1 line

  #1690103: fix initial namespace for code run with trace.main().
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  r83396 | georg.brandl | 2010-08-01 10:52:32 +0200 (So, 01 Aug 2010) | 1 line

  #4810: document "--" option separator in timeit help.
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  r83398 | georg.brandl | 2010-08-01 11:06:34 +0200 (So, 01 Aug 2010) | 1 line

  #8826: the "expires" attribute value is a date string with spaces, but apparently not all user-agents put it in quotes.  Handle that as a special case.
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  r83404 | georg.brandl | 2010-08-01 16:25:22 +0200 (So, 01 Aug 2010) | 1 line

  #6439: fix argument type for PySys_SetArgvEx() and Py_SetProgramName() in Demo/embed code.
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  r83405 | georg.brandl | 2010-08-01 16:38:17 +0200 (So, 01 Aug 2010) | 1 line

  #4943: do not try to include drive letters (and colons) when looking for a probably module name.
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  r83408 | georg.brandl | 2010-08-01 17:30:56 +0200 (So, 01 Aug 2010) | 1 line

  #5551: symbolic links never can be mount points.  Fixes the fix for #1713.
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diff --git a/Lib/trace.py b/Lib/trace.py
index 49ad7a8..f408705 100644
--- a/Lib/trace.py
+++ b/Lib/trace.py
@@ -192,11 +192,13 @@
         base = path[len(longest) + 1:]
     else:
         base = path
+    # the drive letter is never part of the module name
+    drive, base = os.path.splitdrive(base)
     base = base.replace(os.sep, ".")
     if os.altsep:
         base = base.replace(os.altsep, ".")
     filename, ext = os.path.splitext(base)
-    return filename
+    return filename.lstrip(".")
 
 class CoverageResults:
     def __init__(self, counts=None, calledfuncs=None, infile=None,
@@ -799,7 +801,14 @@
         try:
             with open(progname) as fp:
                 code = compile(fp.read(), progname, 'exec')
-            t.run(code)
+            # try to emulate __main__ namespace as much as possible
+            globs = {
+                '__file__': progname,
+                '__name__': '__main__',
+                '__package__': None,
+                '__cached__': None,
+            }
+            t.runctx(code, globs, globs)
         except IOError as err:
             _err_exit("Cannot run file %r because: %s" % (sys.argv[0], err))
         except SystemExit: