fix severe regression involving character arrays (fixes #137)

example/issues.cpp

@@ -0,0 +1,18 @@
+/*
+    example/issues.cpp -- collection of testcases for miscellaneous issues
+
+    Copyright (c) 2015 Wenzel Jakob <wenzel@inf.ethz.ch>
+
+    All rights reserved. Use of this source code is governed by a
+    BSD-style license that can be found in the LICENSE file.
+*/
+
+#include "example.h"
+
+
+void init_issues(py::module &m) {
+    py::module m2 = m.def_submodule("issues");
+
+    // #137: const char* isn't handled properly
+    m2.def("print_cchar", [](const char *string) { std::cout << string << std::endl; });
+}