for given file (path/to/01-font.conf), it
1. creates %{_fontsconfavaildir}
2. copies path/to/01-font.conf to %{_fontsconfavaildir}
uses %link_avail_to_system_fontsconf to
3. create %{_fontsconfddir}
4. link %{_fontsavaildir}/01-fonts.conf %{_fontsconfddir}
OBS-URL: https://build.opensuse.org/package/show/M17N:fonts/fontpackages?expand=0&rev=12
/etc/fonts/conf.avail to /usr/share/%{name}/conf.avail as
fontconfig 2.10 ship its avail conf in /usr/share/fontconfig/conf.avail
- added %link_avail_to_system_fontsconf, which creates symlink pointing
from /etc/fonts/conf.d to ../../../usr/share/%{name}/conf.avail
OBS-URL: https://build.opensuse.org/package/show/M17N:fonts/fontpackages?expand=0&rev=11