Nest: Trivial whitespace cleanup

lib/net.c

nest/a-path.c

nest/a-path_test.c

nest/cli.c

nest/config.Y

nest/iface.c

nest/mrtdump.h

nest/neighbor.c

nest/proto-hooks.c

nest/protocol.h

nest/route.h

nest/rt-attr.c

nest/rt-dev.c

nest/rt-fib.c

nest/rt-show.c

nest/rt-table.c