Since this runs on BPMP a meaningful alignment is 32 bytes, so use a nicer 256.
Reduces size of libs of up to 64KB.
If libs are compiled for armv7/8, 4KB should be used if missing from compiler.
- Allow rebuilds without rebuilding everything
By detecting changes everywhere that matters (flags, objects and headers).
- Add progress bar
- Fully clean everything when clean goal is used
