V2 llmessage merge, incl. llcommon requisites.

Excluded llareslistener, as that appears to only be present for unit-testing
Excluded new SSL methods because, well, they don't work right reliably in v2 for me

indra/llmessage/message.cpp

@@ -257,6 +257,8 @@ LLMessageSystem::LLMessageSystem(const std::string& filename, U32 port,
 {
 	init();
 
+	mSendSize = 0;
+
 	mSystemVersionMajor = version_major;
 	mSystemVersionMinor = version_minor;
 	mSystemVersionPatch = version_patch;
@@ -327,6 +329,8 @@ LLMessageSystem::LLMessageSystem(const std::string& filename, U32 port,
 	mMaxMessageTime   = 1.f;
 
 	mTrueReceiveSize = 0;
+
+	mReceiveTime = 0.f;
 }