Fix for SF bug #436525, reported by Greg Kochanski:
The block/unblock thread macros are called 'Py_BLOCK_THREADS' and
'Py_UNBLOCK_THREADS', not 'Py_BEGIN_BLOCK_THREADS' and
'Py_BEGIN_UNBLOCK_THREADS'.
diff --git a/Doc/api/api.tex b/Doc/api/api.tex
index 4c55b96..44a3d35 100644
--- a/Doc/api/api.tex
+++ b/Doc/api/api.tex
@@ -4598,14 +4598,14 @@
disabled at compile time.
\end{csimplemacrodesc}
-\begin{csimplemacrodesc}{Py_BEGIN_BLOCK_THREADS}
+\begin{csimplemacrodesc}{Py_BLOCK_THREADS}
This macro expands to \samp{PyEval_RestoreThread(_save);} i.e. it
is equivalent to \code{Py_END_ALLOW_THREADS} without the closing
brace. It is a no-op when thread support is disabled at compile
time.
\end{csimplemacrodesc}
-\begin{csimplemacrodesc}{Py_BEGIN_UNBLOCK_THREADS}
+\begin{csimplemacrodesc}{Py_UNBLOCK_THREADS}
This macro expands to \samp{_save = PyEval_SaveThread();} i.e. it is
equivalent to \code{Py_BEGIN_ALLOW_THREADS} without the opening brace
and variable declaration. It is a no-op when thread support is