1. The -fno-common fix attempt in r561452 was actually wrong: it marked the declaration of the variable ``serverConnection'' as extern, but there is no corresponding definition of the variable, so it remained an unresolved symbol (that didn't result in a build failure, because GNUstep applications are linked as a shared object)

2. GC leftovers from r132311: unreferenced ADDITIONAL_LDFLAGS and bogus USES+=ghostscript (PDF viewer requires PDFKit framework which is not available from the Ports Collection)

Reported by: naddy (1)
Obtained from: Debian