Fix Issue #1769: Now int('- 1') or int('+ 1') is not allowed
any more.  Thanks Juan Jose Conti.  Also added tests.
diff --git a/Misc/NEWS b/Misc/NEWS
index c59efa1..cb6288a 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,8 @@
 Core and Builtins
 -----------------
 
+- Issue #1769: Now int("- 1") is not allowed any more.
+
 - Object/longobject.c: long(float('nan')) raises an OverflowError instead
   of returning 0.