leveldbwrapper symbol rename: Remove "Level" from class, etc. names

src/txdb.h

@@ -26,11 +26,11 @@ static const int64_t nMaxDbCache = sizeof(void*) > 4 ? 16384 : 1024;
 //! min. -dbcache in (MiB)
 static const int64_t nMinDbCache = 4;
 
-/** CCoinsView backed by the LevelDB coin database (chainstate/) */
+/** CCoinsView backed by the coin database (chainstate/) */
 class CCoinsViewDB : public CCoinsView
 {
 protected:
-    CLevelDBWrapper db;
+    CDBWrapper db;
 public:
     CCoinsViewDB(size_t nCacheSize, bool fMemory = false, bool fWipe = false);
 
@@ -42,7 +42,7 @@ public:
 };
 
 /** Access to the block database (blocks/index/) */
-class CBlockTreeDB : public CLevelDBWrapper
+class CBlockTreeDB : public CDBWrapper
 {
 public:
     CBlockTreeDB(size_t nCacheSize, bool fMemory = false, bool fWipe = false);