[oe] machinename with dash in it

[Jaap de Jong]

Hi All,
something strange happens with my machinename with a dash in it: x-y
If I bitbake some image it will end up that netbase is not found.
Inspection of build/tmp-angstrom_v2012_12-eglibc/work shows 2 variants 
of x-y: one with a dash and one where the dash is replaced by an 
underscore: x-y and x_y
In x-y only netbase is found, rest of the machinespecific packages are 
in x_y
Creating the image fails with the message that netbase is not found...
Any ideas?
Jaap