Add m-esr52 at 52.6.0

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diff --git a/python/macholib/doc/dylib.rst b/python/macholib/doc/dylib.rst
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+:mod:`macholib.dylib` --- Generic dylib path manipulation
+=========================================================
+
+.. module:: macholib.dylib
+   :synopsis: Generic dylib path manipulation
+
+This module defines a function :func:`dylib_info` that can extract
+useful information from the name of a dynamic library.
+
+.. function:: dylib_info(filename)
+
+   A dylib name can take one of the following four forms:
+
+   * ``Location/Name.SomeVersion_Suffix.dylib``
+
+   * ``Location/Name.SomeVersion.dylib``
+
+   * ``Location/Name_Suffix.dylib``
+
+   * ``Location/Name.dylib``
+
+   Returns None if not found or a mapping equivalent to::
+   
+     dict(
+         location='Location',
+         name='Name.SomeVersion_Suffix.dylib',
+         shortname='Name',
+         version='SomeVersion',
+         suffix='Suffix',
+     )
+
+   .. note:: *SomeVersion* and *Suffix* are optional and my be ``None``
+      if not present.