- Update astro/boinc-setiathome-enhanced to 6.12 (SVN r1008)
- Update astro/boinc-astropulse to SVN r868
- Switch to xz compression
- Remove patches integrated upstream
The two ports are committed in one go because boinc-astropulse depends
on the source code of boinc-setiathome-enhanced, i.e.
boinc-astropulse/files/patch-legacy-server__db__ap_schema.cpp
can must be present for the old version of boinc-setiathome-enhanced
but not for the new version.