rewritten PushStringEx in Forward and Function systems

fixed PushCellByRef and PushFloatByRef in the varargs case where it wouldn't set the pushed type
fixed the BindNatives functions not setting the BOUND flag thus making the JIT not exec the natives
done the rest of tests with forwards, only left to do string varargs

--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%40197

core/vm/sp_vm_basecontext.cpp

@@ -374,6 +374,7 @@ int BaseContext::BindNative(sp_nativeinfo_t *native)
 	}
 
 	ctx->natives[index].pfn = native->func;
+	ctx->natives[index].status = SP_NATIVE_BOUND;
 
 	return SP_ERROR_NONE;
 }
@@ -389,6 +390,7 @@ int BaseContext::BindNativeToAny(SPVM_NATIVE_FUNC native)
 		if (ctx->natives[i].status == SP_NATIVE_UNBOUND)
 		{
 			ctx->natives[i].pfn = native;
+			ctx->natives[i].status = SP_NATIVE_BOUND;
 		}
 	}