Better handling of return values. Some bugfixes.

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/branches/gsoc2008-maciekd@10618 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/c/return/example.h

@@ -0,0 +1,16 @@
+#include <stdio.h>
+
+class Bar {
+private:
+  int x;
+public:
+  Bar() : x(0) {}
+  ~Bar() {}
+  void set(int x) { this->x = x; }
+  int get() { return x; }
+};
+
+Bar foo_ret_val();
+//Bar& foo_ret_ref(Bar* bar);
+Bar* foo_ret_ptr(Bar* bar);
+