add getWhoList method

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

@@ -598,6 +598,9 @@ public class Sigar implements SigarProxy {
     public native NetConnection[] getNetConnectionList(int flags)
         throws SigarException;
 
+    public native Who[] getWhoList()
+        throws SigarException;
+
     /**
      * Get network interface configuration info.
      * @exception SigarException on failure.

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

@@ -119,5 +119,7 @@ public interface SigarProxy {
 
     public String[] getNetInterfaceList() 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 Who[] getWhoList()
+        throws SigarException
+    {
+        return this.sigar.getWhoList();
+    }
+
     public synchronized String getFQDN()
         throws SigarException
     {