with -DNO_ROOT to create the METALOG mtree(8) file.
Separate the default STAGEDIR for world (WSTAGEDIR) and kernel
(KSTAGEDIR).
Fix the 'create-kernel-packages' target to work properly.
Evaluate if 'kernel' is set when invoking mtree-to-plist.awk,
which splits the kernel and kernel.debug into separate plist
files.
Fix METALOG creation when building/packaging multiple kernels.
Sponsored by: The FreeBSD Foundation
1/ Analyse the fields from mtree lines to extract:
- owner,
- group,
- mode,
- flags,
- tags,
2/ Ignore non tagged entries
3/ For now concat tags to form a futur package name
