Message logger/writer based on code from Prolapsing Porpoise and many authors

indra/llcommon/llsys.cpp

indra/llmessage/CMakeLists.txt

indra/llmessage/llcircuit.cpp

indra/llmessage/llcircuit.h

indra/llmessage/llhttpclient.cpp

indra/llmessage/llhttpclient.h

indra/llmessage/llhttpconstants.cpp

indra/llmessage/llhttpconstants.h

indra/llmessage/llmessageconfig.cpp

indra/llmessage/llmessageconfig.h

indra/llmessage/llmessagelog.cpp

indra/llmessage/llmessagelog.h

indra/llmessage/llmessagetemplate.h

indra/llmessage/llpacketring.cpp

indra/llmessage/lltemplatemessagereader.cpp

indra/llmessage/lltemplatemessagereader.h

indra/llmessage/lltransfermanager.cpp

indra/llmessage/message.cpp

indra/llmessage/message.h

indra/llmessage/tests/lltemplatemessagedispatcher_test.cpp