ledger: 5 failing tests

[Thomas Danckaert]

Hi,

while checking a change to the boost package (for core-updates), I 
noticed that the package “ledger” fails 5 tests (both before and 
after the change to boost).

In case anyone is familiar with this package and would like to have a 
look:

http://hydra.gnu.org/build/2331320

(It hasn't been built successfully since 2016-08-02 though...)

Thomas