Fixed the path in shell executable when DESTDIR isn't empty.
Fixed the path in shell executable when DESTDIR isn't empty.

JosephGoulden/PyBitmessageF2F,debguy0x/PyBitmessage,torifier/PyBitmessage,bmng-dev/PyBitmessage,metamarcdw/PyBitmessage-I2P,kyucrane/PyBitmessage,hb9kns/PyBitmessage,Atheros1/PyBitmessage,timothyparez/PyBitmessage,xeddmc/PyBitmessage,mailchuck/PyBitmessage,domob1812/PyBitmessage,Atheros1/PyBitmessage,gnu3ra/PyBitmessage,xeddmc/PyBitmessage,debguy0x/PyBitmessage,bmng-dev/PyBitmessage,domob1812/PyBitmessage,debguy0x/PyBitmessage,lightrabbit/PyBitmessage,rzr/PyBitmessage,krytarowski/PyBitmessage,lightrabbit/PyBitmessage,Erkan-Yilmaz/PyBitmessage,kyucrane/PyBitmessage,hb9kns/PyBitmessage,domob1812/PyBitmessage,gnu3ra/PyBitmessage,metamarcdw/PyBitmessage-I2P,mailchuck/PyBitmessage,hb9kns/PyBitmessage,mailchuck/PyBitmessage,hb9kns/PyBitmessage,bmng-dev/PyBitmessage,timothyparez/PyBitmessage,JosephGoulden/PyBitmessageF2F,lightrabbit/PyBitmessage,timothyparez/PyBitmessage,torifier/PyBitmessage,Erkan-Yilmaz/PyBitmessage,mailchuck/PyBitmessage,rzr/PyBitmessage,krytarowski/PyBitmessage,lightrabbit/PyBitmessage,Atheros1/PyBitmessage,Atheros1/PyBitmessage,torifier/PyBitmessage,timothyparez/PyBitmessage,debguy0x/PyBitmessage,torifier/PyBitmessage