Unable to checkout libraries/leveldb, master branch and/or release tag need to be updated

[abitmore]

Our release tag is unable to build due to leveldb made a permanent change to their repo.

Unable to checkout '028f9409247be6d3d09a157e8eb347a173afc599' in submodule path 'libraries/leveldb'

• Original commit log of leveldb:

  commit 028f9409247be6d3d09a157e8eb347a173afc599
  Merge: 42dcc7e 803d692
  Author: Pieter Wuille pieter.wuille@gmail.com
  Date: Thu Oct 16 11:45:13 2014 -0700

  Merge upstream LevelDB 1.18

  commit 803d69203a62faf50f1b77897310a3a1fcae712b

• Now:

  commit 7d41e6f89ff04ce9e6a742932924796f69c6e23d
  Merge: 42dcc7e 803d692
  Author: Pieter Wuille pieter.wuille@gmail.com
  Date: Thu Oct 16 11:45:13 2014 -0700

  Merge upstream LevelDB 1.18

  commit 803d69203a62faf50f1b77897310a3a1fcae712b

[abitmore]

It has been fixed with 4c8928d, but need to merge the commit to master branch and/or release tag.
See #1489.