start of tests refactoring; sqlite3 new wrapper fixes

tests/accept/run/toverl2.nim

@@ -0,0 +1,21 @@
+# Test new overloading resolution rules
+
+import strutils
+
+proc toverl2(x: int): string = return $x
+proc toverl2(x: bool): string = return $x
+
+iterator toverl2(x: int): int = 
+  var res = 0
+  while res < x: 
+    yield res
+    inc(res)
+    
+var
+  pp: proc (x: bool): string = toverl2
+stdout.write(pp(true))
+for x in toverl2(3): 
+  stdout.write(toverl2(x))
+stdout.write("\n")
+#OUT true012
+