contact normal should point from B to A (to be consistent with Bullet 2.x)

stringify: pre-allocate bigger buffer (10MB, workaround)

build3/stringifyKernel.lua

@@ -1,7 +1,7 @@
 
 
 function stringifyKernel(filenameIn, filenameOut, kernelMethod)
-  local BUFSIZE = 1024*1024     -- 1MB
+  local BUFSIZE = 10*1024*1024     -- 10MB
 	local f = io.open(filenameIn,"r");
    	local fw = io.open(filenameOut,"w");
    	fw:write("//this file is autogenerated using stringify.bat (premake --stringify) in the build folder of this project\n")