Fix for bugs 64978 and 24312. Add a call to SystemTask into the autoreg loop to ensure that the OS has time to grow its File Control Block tables, to avoid running out of FCBs when doing autoreg after rebooting the machine. r=ccarlen, sdagley, sr=scc

xpcom/components/nsNativeComponentLoader.cpp

@@ -751,6 +751,15 @@ nsNativeComponentLoader::AutoRegisterComponent(PRInt32 when,
         // so that 3rd party shared libraries will be noticed!
         validExtension = ((type == 'shlb') || (type == 'NSPL'));
       }
+      
+      if (validExtension)
+      {
+      	// This call to SystemTask is here to give the OS time to grow it's
+      	// FCB (file control block) list, which it seems to be unable to
+      	// do unless we yield some time to the OS. See bug 64978 for the whole
+      	// story.
+      	::SystemTask();
+      }
     }
 
 #else