Update rocksdb version

Summary: rocksdb-2.0 released to third party

Test Plan: visual inspection

Reviewers: dhruba, haobo, sheki

Reviewed By: dhruba

CC: leveldb

Differential Revision: https://reviews.facebook.net/D11559

Makefile

@@ -90,8 +90,8 @@ SHARED3 = $(SHARED1)
 SHARED = $(SHARED1)
 else
 # Update db.h if you change these.
-SHARED_MAJOR = 1
+SHARED_MAJOR = 2
-SHARED_MINOR = 5
+SHARED_MINOR = 0
 SHARED1 = libleveldb.$(PLATFORM_SHARED_EXT)
 SHARED2 = $(SHARED1).$(SHARED_MAJOR)
 SHARED3 = $(SHARED1).$(SHARED_MAJOR).$(SHARED_MINOR)

include/leveldb/db.h

@@ -19,8 +19,8 @@ namespace leveldb {
 using std::unique_ptr;
 
 // Update Makefile if you change these
-static const int kMajorVersion = 1;
+static const int kMajorVersion = 2;
-static const int kMinorVersion = 5;
+static const int kMinorVersion = 0;
 
 struct Options;
 struct ReadOptions;