[docs] [issue15821] Improve docs for PyMemoryView_FromBuffer()

[Alexander Belopolsky]

Alexander Belopolsky added the comment:

I've updated test_indirect.py to print all memoryview fields and cleaned up the _testbuffer patch a little.  Note this code that is needed to prevent a memory leak:

+    /* PyMemoryView_FromBuffer ignores info.obj.  Add it explicitely. */
+    if (view != NULL)
+      ((PyMemoryViewObject *)view)->view.obj = info.obj;

Shouldn't  PyMemoryView_FromBuffer() copy non-NULL obj from Py_buffer?

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Added file: http://bugs.python.org/file27062/test_indirect.py

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