Export SYSTEMTESTTOP from run.sh (so, it doesn't have to be defined in each script) and scrub / from the test names

bin/tests/system/run.sh

@@ -13,9 +13,11 @@
 # Run a system test.
 #
 
-SYSTEMTESTTOP=.
+SYSTEMTESTTOP=$(realpath .)
 . $SYSTEMTESTTOP/conf.sh
 
+export SYSTEMTESTTOP
+
 stopservers=true
 baseport=5300
 
@@ -45,7 +47,7 @@ if [ $# -eq 0 ]; then
     exit 1
 fi
 
-systest=$1
+systest=${1%%/}
 shift
 
 if [ ! -d $systest ]; then