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/Symbols.h

@@ -338,17 +338,17 @@ protected:
 private:
     Scope *_templateParameters;
     FullySpecifiedType _returnType;
+    struct Flags {
+        unsigned _isVariadic: 1;
+        unsigned _isPureVirtual: 1;
+        unsigned _isConst: 1;
+        unsigned _isVolatile: 1;
+        unsigned _isAmbiguous: 1;
+        unsigned _methodKey: 3;
+    };
     union {
         unsigned _flags;
-
-        struct {
-            unsigned _isVariadic: 1;
-            unsigned _isPureVirtual: 1;
-            unsigned _isConst: 1;
-            unsigned _isVolatile: 1;
-            unsigned _isAmbiguous: 1;
-            unsigned _methodKey: 3;
-        };
+        Flags f;
     };
     Scope *_arguments;
 };