Merge pull request #623 from jmaas/master

Download new versions of menu.c32 and pxelinux.0 from syslinux 4.02
Merge pull request #624 from jmaas/master

Remove duplicate configuration item in settings file. This fixes #548
Merge pull request #626 from jmaas/master

Downgrade syslinux 4.02 to 3.86 and unbreak VMware deployments.
Add the option --use-ssl so cobbler replicate can use https vs http
Merge pull request #629 from chjohnst/usessl

Add the option --use-ssl so cobbler replicate can use https vs http