Windows support (freezing).

Client notification support.
Hypervisor manager changes.
IOU reload support.
Switch to non-dynamic module loading because of a multiprocessing
problem on Windows.

gns3server/modules/dynamips/backends/atmsw.py

@@ -47,6 +47,9 @@ class ATMSW(object):
             name = request["name"]
 
         try:
+            if not self._hypervisor_manager:
+                self.start_hypervisor_manager()
+
             hypervisor = self._hypervisor_manager.allocate_hypervisor_for_simulated_device()
             atmsw = ATMSwitch(hypervisor, name)
         except DynamipsError as e:

gns3server/modules/dynamips/backends/ethhub.py

@@ -46,6 +46,9 @@ class ETHHUB(object):
             name = request["name"]
 
         try:
+            if not self._hypervisor_manager:
+                self.start_hypervisor_manager()
+
             hypervisor = self._hypervisor_manager.allocate_hypervisor_for_simulated_device()
             ethhub = Hub(hypervisor, name)
         except DynamipsError as e:

gns3server/modules/dynamips/backends/ethsw.py

@@ -46,6 +46,9 @@ class ETHSW(object):
             name = request["name"]
 
         try:
+            if not self._hypervisor_manager:
+                self.start_hypervisor_manager()
+
             hypervisor = self._hypervisor_manager.allocate_hypervisor_for_simulated_device()
             ethsw = EthernetSwitch(hypervisor, name)
         except DynamipsError as e:

gns3server/modules/dynamips/backends/frsw.py

@@ -46,6 +46,9 @@ class FRSW(object):
             name = request["name"]
 
         try:
+            if not self._hypervisor_manager:
+                self.start_hypervisor_manager()
+
             hypervisor = self._hypervisor_manager.allocate_hypervisor_for_simulated_device()
             frsw = FrameRelaySwitch(hypervisor, name)
         except DynamipsError as e:

gns3server/modules/dynamips/backends/vm.py

@@ -127,7 +127,7 @@ class VM(object):
         try:
 
             if not self._hypervisor_manager:
-                raise DynamipsError("Dynamips manager is not started")
+                self.start_hypervisor_manager()
 
             hypervisor = self._hypervisor_manager.allocate_hypervisor_for_router(image, ram)