Move test scripts from nightlybuild.sh to separate files

The test scripts are now in nightly/tests/TURN/PLAYER.  For each turn,
the update script is executed first (except for turn 00), and then all
the player scripts in the appropriate turn directory.  This runs
runfeed() in different directories; change it to accomodate for that.

The update script runs "report *" on all updates.  Before, it ran only
on some of them.

src/scripts/nightly/tests/update

@@ -0,0 +1,11 @@
+#!/bin/sh
+. "${SCRIPTDIR}"/common.sh
+runfeed POGO peter << EOF
+power new
+report *
+cen * ?own#0
+comm * ?own#0
+reso * ?own#0
+force
+EOF
+sleep 10