This makes the order of objects in archives created by libtool
consistent.
It is known to affect cases where the *_LIBADD automake variable is
used to add extra objects from a separate archive.
Fixing this allows us to remove a few workarounds.
- Rename sources to distfiles for clarity.
- Per sys(a/c) distfiles to reduce rootfs.py processing and reduce RAM
usage in sysa.
- Canonicalise early kaem mes/tcc files to kaem script conventions.
- Cleanup unused setup in python.