Some more bugfixes, got regex working as well as the cpp version. (leaks memory like craaazy)

tests/test_regex.expected_results

@@ -1,2 +1,42 @@
+concat
 2
+-1
+repitition
+2
+18
+26
+-1
+-1
+-1
+alternation
+1
+1
+1
+1
+1
+-1
+perens!
+1
+1
+2
+2
+2
+12
 0
+optional!
+-1
+1
+2
+Old Contributed
+1
+2
+4
+0
+2
+4
+-1
+1
+5
+0
+6
+9