Log Message:
Update 0.51 to 0.54
-------------------
0.54  9th November 2013
        * memory leak in CDS locking routines
          [RT #90134]

0.53  14th August 2013
        * BerkeleyDB-0.52 fails to build on 5.18.1RC3
          [RT #87771]

        * typo fixes
          [RT #86705]

0.52  7th May 2013
        * Updates for BDB 6.0 - Added Blob support
            - Added BerkeleyDB::DbStream class to interface to Blobs
            - Added BlobThreshold & BlobDir option to BerkeleyDB::Env
              constructor
            - Added BlobThreshold & BlobDir option to Hash, Btree & Heap
              constructors
            - Added get_blob_threshold method to BerkeleyDB::Env
            - Added get_blob_dir method to BerkeleyDB::Env
            - Added get_blob_threshold method to the Hash, Btree & Heap
            - Added get_blob_dir method to the Hash, Btree & Heap

        * Added method $cursor->set_partial
        * Added method $cursor->partial_clear

        * $env->lock_detect dies due to incorrect version check
          [RT #84179]

        * (Memory leak in db_verify() method. (libdb < 4.2))
          [RT #84409]

        * Fix a few croaks