Split Bullet/src/LinearMath/btSerializer.cpp into btSerializer64.cpp to make it easier to rebuild serialization structure.

Add several MSVC optimization flags to cmake.
Bump up VERSION because serialization format changed
Expose btScalar& jointMaxForce, btScalar& jointMaxVelocity to 'getJointInfo2' API, add backwards compatibility to examples\Importers\ImportURDFDemo\URDFImporterInterface::getJointInfo.

pybullet: expose 4 more fields to getJointInfo: jointLowerLimit/jointUpperLimit/jointMaxForce/jointMaxVelocity
fix performance issue in CMD_ACTUAL_STATE_UPDATE_COMPLETED

Extras/Serialize/HeaderGenerator/apiGen.cpp

@@ -20,12 +20,13 @@
 #include "bDNA.h"
 #include "bBlenderFile.h"
 #include "btBulletFile.h"
+#include "LinearMath/btSerializer.h"
 #include "bCommon.h"
 #include <map>
 #include <vector>
 #include <string.h>
 
-bool isBulletFile = false;
+bool isBulletFile = true;
 
 using namespace bParse;
 typedef std::string bString;
@@ -216,10 +217,12 @@ int main(int argc,char** argv)
 	using namespace bParse;
 	dump = fopen("dump.py", "w");
 
+
 	if (!dump) return 0;
 	fprintf(dump, "%s\n", data);
 
-	
+
+#if 0
 	char* filename = "../../../../data/r2d2_multibody.bullet";
 	
 	if (argc==2)
@@ -269,9 +272,12 @@ int main(int argc,char** argv)
 		bBlenderFile	f(memBuf,len);
 		swap = (f.getFlags() & FD_ENDIAN_SWAP)!=0;
 	}
-
-	
-	
+#else
+	isBulletFile = true;
+	bool swap = false;
+	char* memBuf = sBulletDNAstr;
+	int len = sBulletDNAlen;
+#endif
 
 
 	char *blenderData = memBuf;

Extras/Serialize/HeaderGenerator/bulletGenerate.py

@@ -1,6 +1,9 @@
+import sys
+sys.path.append(".")
 import dump
 
 
+
 header = """/* Copyright (C) 2011 Erwin Coumans & Charlie C
 *
 * This software is provided 'as-is', without any express or implied