Fix tests on *BSD.

test/executables.test

@@ -5,4 +5,6 @@
 # Just test whether the executables work
 $tincd --help
 $tinc --help
-$sptps_test --help
+if [ -e $sptps_test ]; then
+	$sptps_test --help
+fi

test/sptps-basic.test

@@ -2,6 +2,10 @@
 
 . ./testlib.sh
 
+# Skip this test if we did not compile sptps_test
+
+test -e $sptps_test || exit 77
+
 # Generate keys
 
 mkdir -p $d1

test/testlib.sh

@@ -9,18 +9,10 @@ sptps_keypair=../src/sptps_keypair
 
 # Test directories
 
-case "$_" in
-	/*)
-		d1=$_.1
-		d2=$_.2
-		d3=$_.3
-	;;
-	*)
-		d1=$PWD/$_.1
-		d2=$PWD/$_.2
-		d3=$PWD/$_.3
-	;;
-esac
+scriptname=`basename $0`
+d1=$PWD/$scriptname.1
+d2=$PWD/$scriptname.2
+d3=$PWD/$scriptname.3
 
 # Default arguments for both tinc and tincd