Latest patches from Purism, including some they backported from
upstream.
fixes#1058
The debian dir was dropped from the archives in this fork repo, but the
number of patches has been dramatically reduced.
A new mechanism (thanks @ollieparanoid) is added here to compare the
list of patches stored in pmaports when this package was upgraded to the
list of patches in purism's repo @ some commit this package uses, so
that any difference can be detected (pacakge will fail to build). If
there's a mismatch, the patches from this repo should be updated/added
to match what's in purism's repo @ the commit, and purism_patches.series
should be updated to match the debian/patches/series file in the purism
repo.