Change in default behaviour wrapping C++ bool for Python.

Only a Python True or False will now work for C++ bool parameters.
This fixes overloading bool with other types.

Examples/test-suite/ruby/overload_bool_runme.rb

@@ -0,0 +1,88 @@
+#!/usr/bin/env ruby
+#
+# Put description here
+#
+# 
+# 
+# 
+#
+
+require 'swig_assert'
+
+require 'overload_bool'
+
+include Overload_bool
+
+# Overloading bool, int, string
+if overloaded(true) != "bool"
+  raise RuntimeError, "wrong!"
+end
+if overloaded(false) != "bool"
+  raise RuntimeError, "wrong!"
+end
+
+if overloaded(0) != "int"
+  raise RuntimeError, "wrong!"
+end
+if overloaded(1) != "int"
+  raise RuntimeError, "wrong!"
+end
+if overloaded(2) != "int"
+  raise RuntimeError, "wrong!"
+end
+
+if overloaded("1234") != "string"
+  raise RuntimeError, "wrong!"
+end
+
+# Test bool masquerading as integer
+# Not possible
+
+# Test int masquerading as bool
+if boolfunction(0) != "false"
+  raise RuntimeError, "wrong!"
+end
+if boolfunction(1) != "true"
+  raise RuntimeError, "wrong!"
+end
+if boolfunction(2) != "true"
+  raise RuntimeError, "wrong!"
+end
+
+#############################################
+
+# Overloading bool, int, string
+if overloaded_ref(true) != "bool"
+  raise RuntimeError, "wrong!"
+end
+if overloaded_ref(false) != "bool"
+  raise RuntimeError, "wrong!"
+end
+
+if overloaded_ref(0) != "int"
+  raise RuntimeError, "wrong!"
+end
+if overloaded_ref(1) != "int"
+  raise RuntimeError, "wrong!"
+end
+if overloaded_ref(2) != "int"
+  raise RuntimeError, "wrong!"
+end
+
+if overloaded_ref("1234") != "string"
+  raise RuntimeError, "wrong!"
+end
+
+# Test bool masquerading as integer
+# Not possible
+
+# Test int masquerading as bool
+if boolfunction_ref(0) != "false"
+  raise RuntimeError, "wrong!"
+end
+if boolfunction_ref(1) != "true"
+  raise RuntimeError, "wrong!"
+end
+if boolfunction_ref(2) != "true"
+  raise RuntimeError, "wrong!"
+end