Using @alias on unnumberedsec

[Christopher Dimech]

I have noticed that trying to use alias on @unnumberedsec
makes texinfo behave strangely when trying to get the manual.

@alias usec = unnumberedsec

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Christopher Dimech
Chief Administrator - Naiad Informatics - GNU Project (Geocomputation)
- Geophysical Simulation
- Geological Subsurface Mapping
- Disaster Preparedness and Mitigation
- Natural Resource Exploration and Production
- Free Software Advocacy