glave: Remove MemTracker and replace with ObjectTracker

Too many tests cause MemTracker to spew a ton of errors.
Also don't print Info or Warnings during DbgCall in replayer as the
validation layers are too chatty!
diff --git a/glave-generate.py b/glave-generate.py
index e29fae6..d65aafb 100755
--- a/glave-generate.py
+++ b/glave-generate.py
@@ -2111,7 +2111,7 @@
         cd_body.append('                {')
         cd_body.append('                    XGL_DEVICE_CREATE_INFO cInfo, *ci;')
         cd_body.append('                    // TODO what is the real list of layers to be running with??')
-        cd_body.append('                    const XGL_CHAR * layersStr[2] = {(XGL_CHAR *) "DrawState", (XGL_CHAR *) "MemTracker"};')
+        cd_body.append('                    const XGL_CHAR * layersStr[2] = {(XGL_CHAR *) "DrawState", (XGL_CHAR *) "ObjectTracker"};')
         cd_body.append('                    XGL_LAYER_CREATE_INFO layerInfo;')
         cd_body.append('                    ci = (XGL_DEVICE_CREATE_INFO *) pPacket->pCreateInfo;')
         cd_body.append('                    while (ci->pNext != NULL)')