Bug Workaround - locking

- Added support for the "locking" configuration variable that disables
  file locking.  This can be helpful to folks who use task on Solaris,
  and store their task data files on an NFS mount.

src/TDB.h

@@ -51,6 +51,8 @@ public:
   int gc                ();
   int nextId            ();
 
+  void noLock           ();
+
 private:
   bool lock             (FILE*) const;
   bool overwritePending (std::vector <T>&);
@@ -62,6 +64,7 @@ private:
   std::string mPendingFile;
   std::string mCompletedFile;
   int mId;
+  bool mNoLock;
 };
 
 #endif