Fix several minor problems introduced by the memtune series

Add proper documentation to the new VIR_DOMAIN_MEMORY_* macros in
libvirt.h.in to placate apibuild.py.

Mark args as unused in for libvirt_virDomain{Get,Set}MemoryParameters
in the Python bindings and add both to the libvirtMethods array.

Update remote_protocol-structs to placate make syntax-check.

Undo unintended modifications in vboxDomainGetInfo.

Update the function table of the VirtualBox and XenAPI drivers.

python/libvirt-override.c

@@ -374,14 +374,14 @@ libvirt_virDomainSetSchedulerParameters(PyObject *self ATTRIBUTE_UNUSED,
 /* FIXME: This is a place holder for the implementation. */
 static PyObject *
 libvirt_virDomainSetMemoryParameters(PyObject *self ATTRIBUTE_UNUSED,
-                                     PyObject *args) {
+                                     PyObject *args ATTRIBUTE_UNUSED) {
     return VIR_PY_INT_FAIL;
 }
 
 /* FIXME: This is a place holder for the implementation. */
 static PyObject *
 libvirt_virDomainGetMemoryParameters(PyObject *self ATTRIBUTE_UNUSED,
-                                     PyObject *args) {
+                                     PyObject *args ATTRIBUTE_UNUSED) {
     return VIR_PY_INT_FAIL;
 }
 
@@ -3532,6 +3532,8 @@ static PyMethodDef libvirtMethods[] = {
     {(char *) "virDomainGetSchedulerType", libvirt_virDomainGetSchedulerType, METH_VARARGS, NULL},
     {(char *) "virDomainGetSchedulerParameters", libvirt_virDomainGetSchedulerParameters, METH_VARARGS, NULL},
     {(char *) "virDomainSetSchedulerParameters", libvirt_virDomainSetSchedulerParameters, METH_VARARGS, NULL},
+    {(char *) "virDomainSetMemoryParameters", libvirt_virDomainSetMemoryParameters, METH_VARARGS, NULL},
+    {(char *) "virDomainGetMemoryParameters", libvirt_virDomainGetMemoryParameters, METH_VARARGS, NULL},
     {(char *) "virDomainGetVcpus", libvirt_virDomainGetVcpus, METH_VARARGS, NULL},
     {(char *) "virDomainPinVcpu", libvirt_virDomainPinVcpu, METH_VARARGS, NULL},
     {(char *) "virConnectListStoragePools", libvirt_virConnectListStoragePools, METH_VARARGS, NULL},