main
doc: add prefixes to guide labels
doc: remove unreferenced KNI and examples figures
doc: improve programmers guide
doc: clarify BPF instruction set support
doc: shorten page references in guides
bus: align unplug with device probe
doc: reword glossary
doc: reorganize prog guide
doc: adjust heading underline lengths
doc: remove reference to pcapng init function
mempool: retrieve objects location info