Further header cleanup and a few updates

Updated llstring to current linden
Further linden_common cleanup
Header cleanup
Raised banlines to 5000 as per linden server change
Included missing llmediaentry.cpp file
Minor whitespace changes here and there

indra/llmessage/llbuffer.cpp

@@ -28,7 +28,6 @@
 
 #include "linden_common.h"
 #include "llbuffer.h"
-#include <iterator>
 
 #include "llmath.h"
 #include "llmemtype.h"

indra/llmessage/lldispatcher.cpp

@@ -29,7 +29,6 @@
 #include "lldispatcher.h"
 
 #include <algorithm>
-#include <iterator>
 #include "llstl.h"
 #include "message.h"
 

indra/llmessage/llfiltersd2xmlrpc.cpp

@@ -80,7 +80,6 @@
 
 #include "llbuffer.h"
 #include "llbufferstream.h"
-#include "llfasttimer.h"
 #include "llmemorystream.h"
 #include "llsd.h"
 #include "llsdserialize.h"

indra/llmessage/llhttpclient.cpp

@@ -158,7 +158,7 @@ namespace
 			if(fstream.is_open())
 			{
 				fstream.seekg(0, std::ios::end);
-				U32 fileSize = fstream.tellg();
+				U32 fileSize = (U32)fstream.tellg();
 				fstream.seekg(0, std::ios::beg);
 				std::vector<char> fileBuffer(fileSize);
 				fstream.read(&fileBuffer[0], fileSize);

indra/llmessage/lliohttpserver.cpp

@@ -33,7 +33,6 @@
 #include "llapr.h"
 #include "llbuffer.h"
 #include "llbufferstream.h"
-#include "llfasttimer.h"
 #include "llhttpnode.h"
 #include "lliopipe.h"
 #include "lliosocket.h"

indra/llmessage/lliosocket.cpp

@@ -32,7 +32,6 @@
 #include "llapr.h"
 
 #include "llbuffer.h"
-#include "llfasttimer.h"
 #include "llhost.h"
 #include "llmemtype.h"
 #include "llpumpio.h"

indra/llmessage/llioutil.cpp

@@ -27,7 +27,6 @@
  */
 
 #include "linden_common.h"
-#include "llfasttimer.h"
 #include "llioutil.h"
 
 /**