Wholesale update of llmessage to V3.2

Note that this removes message logger for now.

indra/llimage/llimageworker.cpp

@@ -50,7 +50,7 @@ LLImageDecodeThread::~LLImageDecodeThread()
 
 // MAIN THREAD
 // virtual
-S32 LLImageDecodeThread::update(U32 max_time_ms)
+S32 LLImageDecodeThread::update(F32 max_time_ms)
 {
 	LLMutexLock lock(&mCreationMutex);
 	for (creation_list_t::iterator iter = mCreationList.begin();