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/securityselinuxlabeltest.c

@@ -42,6 +42,8 @@
 
 #define VIR_FROM_THIS VIR_FROM_NONE
 
+VIR_LOG_INIT("tests.securityselinuxlabeltest");
+
 static virCapsPtr caps;
 static virDomainXMLOptionPtr xmlopt;