Homebrew/homebrew — pull request #32484 by tdsmith (2014-09-21 15:40:06+00:00)
Title: ledger: boost 1.56 compatibility

Patch from https://groups.google.com/forum/#!topic/ledger-cli/9HwEJcD0My4

Addresses build failure against boost 1.56 described at https://github.com/Homebrew/homebrew/pull/31428#issuecomment-56282997