r163: - Reorder kcompat.h and add section comments to improve readability (somewhat)
r163: - Reorder kcompat.h and add section comments to improve readability (somewhat)

cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr