Fix for incorrect menu in container

pp4mnklinux reported the problem:

https://forum.puppylinux.com/viewtopic.php?p=165483#p165483

Yes, ffconvert and SpaceFM were removed in Easy 7.2, but pp4mnklinux found that the JWM menu in containers was not updated.

I have edited /etc/rc.d/rc.sysinit and /usr/local/easy_containers/ec-chroot to detect this situation and fix the menu.  

Tags: easy