vz: build driver as module and don't register it on client's side

Make it possible to build vz driver as a module and don't link it with
libvirt.so statically.
Remove registering it on client's side as far as we start relying on daemon

Signed-off-by: Maxim Nestratov <mnestratov@virtuozzo.com>

daemon/Makefile.am

@@ -233,6 +233,10 @@ if WITH_VBOX
     libvirtd_LDADD += ../src/libvirt_driver_vbox.la
 endif WITH_VBOX
 
+if WITH_VZ
+    libvirtd_LDADD += ../src/libvirt_driver_vz.la
+endif WITH_VZ
+
 if WITH_STORAGE
     libvirtd_LDADD += ../src/libvirt_driver_storage.la
 endif WITH_STORAGE

daemon/libvirtd.c

@@ -102,6 +102,9 @@
 #  include "nwfilter/nwfilter_driver.h"
 # endif
 #endif
+#ifdef WITH_VZ
+# include "vz/vz_driver.h"
+#endif
 
 #include "configmake.h"
 
@@ -390,6 +393,9 @@ static void daemonInitialize(void)
 # ifdef WITH_BHYVE
     virDriverLoadModule("bhyve");
 # endif
+# ifdef WITH_VZ
+    virDriverLoadModule("vz");
+# endif
 #else
 # ifdef WITH_NETWORK
     networkRegister();
@@ -430,6 +436,9 @@ static void daemonInitialize(void)
 # ifdef WITH_BHYVE
     bhyveRegister();
 # endif
+# ifdef WITH_VZ
+    vzRegister();
+# endif
 #endif
 }