Create a struct for manage a page easier

log/include/log_action.h

log/include/page.h

log/src/ana/globals.c

log/src/ana/iscope.c

log/src/ana/main.c

log/src/ana/mmeter.c

log/src/gate.c

log/src/label.c

log/src/log.c

log/src/logcom.c

log/src/loghier.c

log/src/logntk.c

log/src/logsim.c

log/src/logsimh.c

log/src/logspc.c

log/src/node.c

log/src/page.c

log/src/screen.c

log/src/wire.c