add NetStat getters

bindings/java/src/net/hyperic/sigar/Sigar.java

@@ -604,6 +604,11 @@ public class Sigar implements SigarProxy {
     public native NetConnection[] getNetConnectionList(int flags)
     throws SigarException;
 
+    public NetStat getNetStat()
+        throws SigarException {
+        return new NetStat(this);
+    }
+    
     public native Who[] getWhoList()
         throws SigarException;
 

bindings/java/src/net/hyperic/sigar/SigarProxy.java

@@ -119,6 +119,8 @@ public interface SigarProxy {
 
     public String[] getNetInterfaceList() throws SigarException;
 
+    public NetStat getNetStat() throws SigarException;
+
     public Who[] getWhoList() throws SigarException;
 
     public String getFQDN() throws SigarException;

bindings/java/src/net/hyperic/sigar/SynchronizedSigar.java

@@ -329,6 +329,12 @@ public class SynchronizedSigar implements SigarProxy {
         return this.sigar.getNetInterfaceList();
     }
 
+    public synchronized NetStat getNetStat()
+        throws SigarException
+    {
+        return new NetStat(this.sigar);
+    }
+
     public synchronized Who[] getWhoList()
         throws SigarException
     {