Adds the internal driver API

* src/driver.h: add an extra entry point in the structure
* src/esx/esx_driver.c src/lxc/lxc_driver.c src/opennebula/one_driver.c
  src/openvz/openvz_driver.c src/phyp/phyp_driver.c src/qemu/qemu_driver.c
  src/remote/remote_driver.c src/test/test_driver.c src/uml/uml_driver.c
  src/vbox/vbox_tmpl.c src/xen/xen_driver.c: add NULL entry points for
  all drivers

src/driver.h

@@ -349,6 +349,11 @@ typedef int
 typedef int
     (*virDrvDomainIsPersistent)(virDomainPtr dom);
 
+typedef int
+    (*virDrvCPUCompare)(virConnectPtr conn,
+                        const char *cpu,
+                        unsigned int flags);
+
 /**
  * _virDriver:
  *
@@ -435,6 +440,7 @@ struct _virDriver {
     virDrvConnectIsSecure      isSecure;
     virDrvDomainIsActive       domainIsActive;
     virDrvDomainIsPersistent   domainIsPersistent;
+    virDrvCPUCompare            cpuCompare;
 };
 
 typedef int

src/esx/esx_driver.c

@@ -3428,6 +3428,7 @@ static virDriver esxDriver = {
     esxIsSecure,                     /* isSecure */
     esxDomainIsActive,               /* domainIsActive */
     esxDomainIsPersistent,           /* domainIsPersistent */
+    NULL,                            /* cpuCompare */
 };
 
 

src/lxc/lxc_driver.c

@@ -2454,6 +2454,7 @@ static virDriver lxcDriver = {
     lxcIsSecure,
     lxcDomainIsActive,
     lxcDomainIsPersistent,
+    NULL, /* cpuCompare */
 };
 
 static virStateDriver lxcStateDriver = {

src/opennebula/one_driver.c

@@ -781,6 +781,7 @@ static virDriver oneDriver = {
     oneIsSecure,
     NULL, /* domainIsActive */
     NULL, /* domainIsPersistent */
+    NULL, /* cpuCompare */
 };
 
 static virStateDriver oneStateDriver = {

src/openvz/openvz_driver.c

@@ -1533,6 +1533,7 @@ static virDriver openvzDriver = {
     openvzIsSecure,
     openvzDomainIsActive,
     openvzDomainIsPersistent,
+    NULL, /* cpuCompare */
 };
 
 int openvzRegister(void) {

src/phyp/phyp_driver.c

@@ -1649,6 +1649,7 @@ virDriver phypDriver = {
     phypIsSecure,
     NULL,                       /* domainIsActive */
     NULL,                       /* domainIsPersistent */
+    NULL,                       /* cpuCompare */
 };
 
 int

src/qemu/qemu_driver.c

@@ -7923,6 +7923,7 @@ static virDriver qemuDriver = {
     qemuIsSecure,
     qemuDomainIsActive,
     qemuDomainIsPersistent,
+    NULL, /* cpuCompare */
 };
 
 

src/remote/remote_driver.c

@@ -8830,6 +8830,7 @@ static virDriver remote_driver = {
     remoteIsSecure, /* isSecure */
     remoteDomainIsActive, /* domainIsActive */
     remoteDomainIsPersistent, /* domainIsPersistent */
+    NULL, /* cpuCompare */
 };
 
 static virNetworkDriver network_driver = {

src/test/test_driver.c

@@ -5236,6 +5236,7 @@ static virDriver testDriver = {
     testIsSecure, /* isEncrypted */
     testDomainIsActive, /* domainIsActive */
     testDomainIsPersistent, /* domainIsPersistent */
+    NULL, /* cpuCompare */
 };
 
 static virNetworkDriver testNetworkDriver = {

src/uml/uml_driver.c

@@ -1922,6 +1922,7 @@ static virDriver umlDriver = {
     umlIsSecure,
     umlDomainIsActive,
     umlDomainIsPersistent,
+    NULL, /* cpuCompare */
 };
 
 

src/vbox/vbox_tmpl.c

@@ -7049,6 +7049,7 @@ virDriver NAME(Driver) = {
     vboxIsSecure,
     vboxDomainIsActive,
     vboxDomainIsPersistent,
+    NULL, /* cpuCompare */
 };
 
 virNetworkDriver NAME(NetworkDriver) = {

src/xen/xen_driver.c

@@ -1860,6 +1860,7 @@ static virDriver xenUnifiedDriver = {
     xenUnifiedIsSecure,
     xenUnifiedDomainIsActive,
     xenUnifiedDomainisPersistent,
+    NULL, /* cpuCompare */
 };
 
 /**