cid tasksel postgresql install failure

[Jude DaShiell <jdashiel@shellworld.net>]

tasksel returns an error 255 when installing postgresql.  Before that 
happens though several packages appear to get installed and configured. 
The error happens right after postgresql-doc is configured and 100% shows 
up on the screen.  It's possible the installation may have gone completely 
correctly but tasksel coulldn't handle whatever happened and bombed out 
anyway.  I'll check this out later today since I have to do a credit union 
run before the place closes and shopping today.