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)

test/enet/client/premake4.lua

@@ -5,7 +5,7 @@ project ("Test_enet_client")
 	language "C++"
 			
 	kind "ConsoleApp"
-	targetdir "../../../bin"
+	
 	includedirs {"../../../examples/ThirdPartyLibs/enet/include"}
 	
 	if os.is("Windows") then 

test/enet/server/premake4.lua

@@ -5,7 +5,7 @@ project ("Test_enet_server")
 	language "C++"
 			
 	kind "ConsoleApp"
-	targetdir "../../../bin"
+	
 	includedirs {"../../../examples/ThirdPartyLibs/enet/include"}
 	
 	if os.is("Windows") then