added Design1.txt
addition of lists to timer.c
more comments on problems within timer.c, thread.c: trying to sema_down(&timer_wait) causes ERROR
Merge commit 'e384e65' into alarmclock
Still trying to figure out sema_down() issue
kernel now builds, but need a fix for extern var for "all_list"
Builds, and now have access to lists. Tests fail though, as THREAD_RUNNING cannot be asserted
Merge branches 'master' and 'alarmclock'