[Cppqed-support] boost forward-incompatibility of binary state files

[Raimar S. <rai...@ui...>]

Dear 	András,

just a heads up: boost-1.56.0 seems to introduce an incompatible change to the 
binary archive format. State files generated with with this boost version 
cannot be read with earlier versions of boost. I noticed because I use the 
newer  boost versions on the cluster but not on my desktop.

Fortunately backwards-compatibility seems to be provided, the new boost can 
read archives generated with older versions.

Best regards
Raimar