Addresses #1670 fix bug in descriptor versino upgrades.

If descriptor contents stay the same but version goes up, record new version (instead of ignore it).


git-svn-id: file:///svn/toku/tokudb@11263 c7de825b-a66e-492c-adef-691d508d4ae1

newbrt/brt.c

@@ -2995,7 +2995,8 @@ int toku_brt_open(BRT t, const char *fname, const char *fname_in_env, int is_cre
     }
     assert(t->h);
     if (t->did_set_descriptor) {
-        if (t->h->descriptor.dbt.size!=t->temp_descriptor.dbt.size ||
+        if (t->h->descriptor.version!=t->temp_descriptor.version ||
+            t->h->descriptor.dbt.size!=t->temp_descriptor.dbt.size ||
             memcmp(t->h->descriptor.dbt.data, t->temp_descriptor.dbt.data, t->temp_descriptor.dbt.size)) {
             if (t->temp_descriptor.version <= t->h->descriptor.version) {
                 //Changing descriptor requires upping the version.