some love for the testsuite; fixed regressions

tests/exception/tdefer1.nim

@@ -0,0 +1,18 @@
+discard """
+  output: '''hi
+hi'''
+"""
+
+# bug #1742
+
+template test(): expr =
+    let a = 0
+    defer: echo "hi"
+    a
+
+let i = test()
+
+import strutils
+let x = try: parseInt("133a")
+        except: -1
+        finally: echo "hi"