added some test scripts to use (and test) previously unused instructions

tests/absolute

@@ -0,0 +1,9 @@
+#!/usr/bin/env curly
+1
+abs
+out
+neg
+out
+abs
+out
+end

tests/equal

@@ -0,0 +1,14 @@
+#!/usr/bin/env curly
+\deze
+\deze
+>hetzelfde
+geq
+\niet hetzelfde
+out
+>klaar
+gto
+:hetzelfde
+\hetzelfde!
+out
+:klaar
+end

tests/reverse

@@ -0,0 +1,5 @@
+#!/usr/bin/env curly
+\Dit taaltje is best geinig
+rev
+out
+end