Merged revisions 77484,77487,77561,77570,77593,77603,77608,77667,77702-77703,77739,77858,77887,77889 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

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  r77484 | skip.montanaro | 2010-01-13 19:12:34 -0600 (Wed, 13 Jan 2010) | 4 lines

  Update PyEval_EvalFrame to PyEval_EvalFrameEx.  This looks to have been done
  partially before.  Also add a comment describing how this might have to work
  with different versions of the interpreter.
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  r77487 | ezio.melotti | 2010-01-14 05:34:10 -0600 (Thu, 14 Jan 2010) | 1 line

  Fixed typo
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  r77561 | georg.brandl | 2010-01-17 02:42:30 -0600 (Sun, 17 Jan 2010) | 1 line

  #7699: improve datetime docs: straightforward linking to strftime/strptime section, mark classmethods as such.
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  r77570 | georg.brandl | 2010-01-17 06:14:42 -0600 (Sun, 17 Jan 2010) | 1 line

  Add note about usage of STRINGLIB_EMPTY.
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  r77593 | georg.brandl | 2010-01-17 17:33:53 -0600 (Sun, 17 Jan 2010) | 1 line

  Fix internal reference.
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  r77603 | benjamin.peterson | 2010-01-18 17:07:56 -0600 (Mon, 18 Jan 2010) | 8 lines

  data descriptors do not override the class dictionary if __get__ is not defined

  Adjust documentation and add a test to verify this behavior.

  See http://mail.python.org/pipermail/python-dev/2010-January/095637.html for
  discussion.
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  r77608 | gregory.p.smith | 2010-01-19 02:19:03 -0600 (Tue, 19 Jan 2010) | 6 lines

  Do not compile stubs for the sha2 series hashes in the openssl hashlib
  module when the openssl version is too old to support them.  That
  leads both compiled code bloat and to unittests attempting to test
  implementations that don't exist for comparison purposes on such
  platforms.
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  r77667 | mark.dickinson | 2010-01-21 12:32:27 -0600 (Thu, 21 Jan 2010) | 1 line

  Add two more test_strtod test values.
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  r77702 | georg.brandl | 2010-01-23 02:43:31 -0600 (Sat, 23 Jan 2010) | 1 line

  #7762: fix refcount annotation of PyUnicode_Tailmatch().
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  r77703 | georg.brandl | 2010-01-23 02:47:54 -0600 (Sat, 23 Jan 2010) | 1 line

  #7725: fix referencing issue.
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  r77739 | benjamin.peterson | 2010-01-24 21:52:52 -0600 (Sun, 24 Jan 2010) | 1 line

  mention from_float() in error message
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  r77858 | georg.brandl | 2010-01-30 11:57:48 -0600 (Sat, 30 Jan 2010) | 1 line

  #7802: fix invalid example (heh).
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  r77887 | georg.brandl | 2010-01-31 12:51:49 -0600 (Sun, 31 Jan 2010) | 5 lines

  Fix-up ftplib documentation:
  move exception descriptions to toplevel, not inside a class
  remove attribution in "versionadded"
  spell and grammar check docstring of FTP_TLS
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  r77889 | michael.foord | 2010-01-31 13:59:26 -0600 (Sun, 31 Jan 2010) | 1 line

  Minor modification to unittest documentation.
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diff --git a/Objects/stringlib/README.txt b/Objects/stringlib/README.txt
index c884ec3..ab506d6 100644
--- a/Objects/stringlib/README.txt
+++ b/Objects/stringlib/README.txt
@@ -13,7 +13,8 @@
 
 STRINGLIB_EMPTY
 
-    a PyObject representing the empty string
+    a PyObject representing the empty string, only to be used if
+    STRINGLIB_MUTABLE is 0
 
 Py_ssize_t STRINGLIB_LEN(PyObject*)
 
@@ -31,9 +32,9 @@
 
 int STRINGLIB_CHECK_EXACT(PyObject *)
 
-    returns true if the object is an instance of our type, not a subclass.
+    returns true if the object is an instance of our type, not a subclass
 
 STRINGLIB_MUTABLE
 
-    Must be 0 or 1 to tell the cpp macros in stringlib code if the object
-    being operated on is mutable or not.
+    must be 0 or 1 to tell the cpp macros in stringlib code if the object
+    being operated on is mutable or not