NdbIndexStat.cpp, NdbIndexStat.hpp, Suma.hpp portability changes from pekka

storage/ndb/src/kernel/blocks/suma/Suma.hpp:
  Added a friend declaration to solve a HP-UX C++ scoping issue
storage/ndb/include/ndbapi/NdbIndexStat.hpp:
  Pekka added forward declarations needed by several C++ compilers
storage/ndb/src/ndbapi/NdbIndexStat.cpp:
  Get rid of an uninitialized

storage/ndb/include/ndbapi/NdbIndexStat.hpp

@@ -85,6 +85,11 @@ private:
    *
    * TODO use more compact key format
    */
+  struct Pointer;
+  friend struct Pointer;
+  struct Entry;
+  friend struct Entry;
+  struct Area;
   friend struct Area;
   struct Pointer {
     Uint16 m_pos;

storage/ndb/src/kernel/blocks/suma/Suma.hpp

@@ -148,6 +148,7 @@ public:
    * Subscriptions
    */
   class Table;
+  friend class Table;
   typedef Ptr<Table> TablePtr;
 
   struct SyncRecord {

storage/ndb/src/ndbapi/NdbIndexStat.cpp

@@ -238,6 +238,7 @@ NdbIndexStat::stat_oldest(const Area& a)
 {
   Uint32 i, k, m;
   bool found = false;
+  m = ~(Uint32)0;     // shut up incorrect CC warning
   for (i = 0; i < a.m_entries; i++) {
     Pointer& p = a.get_pointer(i);
     Entry& e = a.get_entry(i);