- use pkgname in download URL
- add check function
- enable unit tests for check
- match pkgusers/pkggroups to pre-install
- add dependencies configure is seeking
- remove obsolete (since 4.0.4) boost-fix.patch
- update license
- add file for configure script
Most of these updates is based on data from https://repology.org/,
detection based on permanent redirect from http:// to https://.
$source urls are updated when they contain $url as substring.
pdns-recursor requires context functions (swapcontext, getcontext,
makecontext). These functions are deprecated in POSIX and not
implemented in musl. s390x also does not support boost context (and
coroutine1/2) yet.