Linux build bug with Taiga 0.1.3

[erno]

The build couldn't find NHibernate.dll, i think because ReferencePath in taiga/addon-modules/ModCableBeach/prebuild.xml points to the main bin directory and NHibernate.dll
wasn't there (found it at ./addon-modules/ModreX/ModularRex/bin/NHibernate.dll).

I worked around using
cp ./addon-modules/ModreX/ModularRex/bin/NHibernate.dll bin/, but being cluefree about prebuild I
don't know how to properly fix it.