1.30 [KK 2007-03-20] Signed/unsigned fix in net_read() (return value <
     0 would get evaluated badly when taken as unsigned). Changed
     state/string handling, so that "up" is a synonym for "available"
     (eg. in "crossroads tell {myservice} {mybackend} up"). Fixed up
     sources so that compilation with -pedantic is OK. Added flag -W
     to warn against loads of things, mainly signed/unsigned comparisons.