Support systemd

Renaming -c , --console options to  -f, --foreground for better semantics.  This is only used for debugging so don't see the need to deprecate first.  Fixing man page for already removed support of -p, --profile option. 

Fedora packaging guidelines:
- http://fedoraproject.org/wiki/Packaging:Systemd
- http://fedoraproject.org/wiki/Packaging:ScriptletSnippets#Systemd

macros expanded:
```
[jortel@localhost gofer]$ rpm --eval %systemd_post

if [ $1 -eq 1 ] ; then 
        # Initial installation 
        /usr/bin/systemctl preset  >/dev/null 2>&1 || : 
fi 

[jortel@localhost gofer]$ rpm --eval %systemd_preun

if [ $1 -eq 0 ] ; then 
        # Package removal, not upgrade 
        /usr/bin/systemctl --no-reload disable  > /dev/null 2>&1 || : 
        /usr/bin/systemctl stop  > /dev/null 2>&1 || : 
fi 

[jortel@localhost gofer]$ rpm --eval %systemd_postun_with_restart

/usr/bin/systemctl daemon-reload >/dev/null 2>&1 || : 
if [ $1 -ge 1 ] ; then 
        # Package upgrade, not uninstall 
        /usr/bin/systemctl try-restart  >/dev/null 2>&1 || : 
fi 

```
Users will be unable to edit the location of goferd. I'm OK with that, but I wanted to state that this is the case.