fix shadowmap crash on some Intel GPUs, see https://github.com/bulletphysics/bullet3/issues/4

remove targetdir from all libraries in premake, so it is much easier to create a separate folder for all binary+lib
transmit the serialized btMultiBody data back from server to client, after the server loads a URDF file. This includes base+link+joint names
tweak the serialization routines, so it is easier to skip pointers and to serialize directly to a shared memory buffer
also tweak the serialization code to allow to process data without 'DNA' schema data (assuming file-DNA = memory DNA)

Extras/Serialize/BulletFileLoader/btBulletFile.h

@@ -21,6 +21,7 @@ subject to the following restrictions:
 #include "LinearMath/btAlignedObjectArray.h"
 #include "bDefines.h"
 
+
 #include "LinearMath/btSerializer.h"
 
 
@@ -38,6 +39,8 @@ namespace bParse {
 				
 	public:
 
+		btAlignedObjectArray<bStructHandle*>	m_multiBodies;
+
 		btAlignedObjectArray<bStructHandle*>	m_softBodies;
 
 		btAlignedObjectArray<bStructHandle*>	m_rigidBodies;
@@ -65,7 +68,7 @@ namespace bParse {
 
 		virtual	void	addDataBlock(char* dataBlock);
 	
-
+		
 		// experimental
 		virtual int		write(const char* fileName, bool fixupPointers=false);