Update libpalaso and chorus

This fixes a problem in which certain versions of Bloom2
had a newer version of libpalaso and therefore had problems
upgrading to the latest version.

Do not merge until the TeamCity tags for libpalaso and chorus
which are currently bloom2test are changed to bloom2.
Merge pull request #41 from andrew-polk/BL616_UpgradeLibpalasoAndChorus

Update libpalaso and chorus