cddlib: add mirror
pspp: add mirror
root: use checksummed patch

Add fossies.org mirror.
sickle: use checksummed patch
astrometry-net 0.46 (new formula)

A package for automated calibration of astronomical images.

Closes #385.
Merge commit '7c74ae2030a7428fd47c25cfaea55063839cccc5' into veclibfort