Add virLogSource variables to all source files

Any source file which calls the logging APIs now needs
to have a VIR_LOG_INIT("source.name") declaration at
the start of the file. This provides a static variable
of the virLogSource type.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>

tests/virnetmessagetest.c

@@ -32,6 +32,8 @@
 
 #define VIR_FROM_THIS VIR_FROM_RPC
 
+VIR_LOG_INIT("tests.netmessagetest");
+
 static int testMessageHeaderEncode(const void *args ATTRIBUTE_UNUSED)
 {
     virNetMessagePtr msg = virNetMessageNew(true);