Fix tests when debug message macros are disabled

indra/llcommon/llerror.h

indra/llcommon/llprocess.cpp

indra/llcommon/llsingleton.cpp

indra/llcommon/llsys.cpp

indra/llcommon/tests/llerror_test.cpp

indra/llcommon/tests/llsdserialize_test.cpp

indra/llmessage/llavatarnamecache.cpp

indra/llmessage/llexperiencecache.cpp

indra/llmessage/llsdmessagebuilder.cpp

indra/llplugin/llplugininstance.cpp

indra/llplugin/llpluginprocesschild.cpp

indra/llprimitive/llprimitive.cpp

indra/llrender/llrender.cpp