Bug#840691: s9-common breakage

[Edgar Fuß]

The problem is line 2011 in 
/usr/share/ghostscript/9.05/Resource/Init/gs_init.ps:
        systemdict /getenv {pop //false} put
change that to
        systemdict /getenv {pop //false} .forceput
(gs-commits 99e331527d541a8f01ad5455c4eb2aabd67281a6) and it works.