Sorry, had to fix changelog and improve spec file (this is the last change):

* Spec improvements:
move creating of compatibility links (5.2b10a2 -> 5.2) from spec
file into Makefile

* Update to version 5.2b10a2:
- Added a transform attribute to the resource element (as an alternative to grammar).
- Removed the grammar attribute from output.
- Added a danger admonition.
- Added a legalsection sectioning element. Allow legalsection in legalnotice.
- Added an otherclass attribute to article as an alternative to the enumerated class values.
- Added a formalgroup element to contain several formal objects (for example, subfigures in a figure).
- Relaxed the content model of abstract to include non-paragraph block elements.
- Added multimediaparams to imagedata.
- Added a buildtarget inline.
- Allow funcdef to contain an explicit void.
- Allow paramdef to contain modifiers.
- Allow fieldsynopsis, methodsynopsis, and methodparam to contain more than one type.
- Extended the content model of type so that it can represent union and intersection types. Added a class attribute to type.
- Allow numbered sections (sect1, sect2, etc.) to contain refentry.
- Added interface to the enumerated values in the class attribute of systemitem.-
- Fix XML catalog to allow both www.docbook.org and docbook.org as URIs.