Add new tests for H-LLL.
Add new tests for H-LLL.

dstehle/fplll,fplll/fplll,fplll/fplll,dstehle/fplll,dstehle/fplll,cr-marcstevens/fplll,cr-marcstevens/fplll,fplll/fplll,cr-marcstevens/fplll,fplll/fplll,fplll/fplll,cr-marcstevens/fplll