[RocksDB] Move table.h to table/

Summary:
- don't see a point exposing table.h to the public.
- fixed make clean to remove also *.d files.

Test Plan: make check; db_stress

Reviewers: dhruba, heyongqiang

Reviewed By: dhruba

CC: leveldb

Differential Revision: https://reviews.facebook.net/D10479

db/table_cache.h

@@ -12,8 +12,8 @@
 #include "db/dbformat.h"
 #include "leveldb/env.h"
 #include "leveldb/cache.h"
-#include "leveldb/table.h"
 #include "port/port.h"
+#include "table/table.h"
 #include "util/storage_options.h"
 
 namespace leveldb {