Compile the C++ parser library with Sun CC 5.9.

Things you mustn't do:
1) end an enum with a comma

2) #include <cxxxx> and not use std::

3) use anonymous structures

All three things are invalid C++. Anonymous structures inside
anonymous unions are allowed by GCC, but that doesn't mean it's valid.

src/shared/cplusplus/Literals.h

@@ -115,14 +115,14 @@ public:
     bool isHex() const;
 
 private:
+    struct Flags {
+        unsigned _type      : 8;
+        unsigned _isHex     : 1;
+        unsigned _isUnsigned: 1;
+    };
     union {
         unsigned _flags;
-
-        struct {
-            unsigned _type      : 8;
-            unsigned _isHex     : 1;
-            unsigned _isUnsigned: 1;
-        };
+        Flags f;
     };
 };