Comment # 7 on bug 4256 from Vasiliy Glazov

1. As you can see in build.log
http://koji.russianfedora.pro/kojifiles/work/tasks/106/90106/build.log
OpenAL doesn't work an disabled. So I recommend add --without-openal to
configure.

2. I think it is better remove version suffix from bin-file name.
Add before configure:
#remove version postfix
sed -e 's/aegisub-3\.2/aegisub/' -e 's/aegisub-32/aegisub/' -i configure

Change 
%find_lang %{name}
%files -f %{name}-32.lang
%{_bindir}/%{name}*

to
%find_lang %{name}
%files -f %{name}.lang
%{_bindir}/%{name}