Change default PATH for Jessie / wheezy+1

[Ulrich Dangel <uli@spamt.net>]

Currently the default PATH for Debian does not include /sbin, /usr/sbin, nor
/usr/local/sbin. If an user wants to run a program in either /sbin/ or /usr/sbin
the full path must be specified.

Some programs don't necessarily need root privileges like blkid, iwconfig,
ifconfig, service etc. and can be partially useful for the normal user.

If a program requires root privileges, sudo is nowadays a standard solution  (the
debian installer even automatically installs sudo undder specific circumstances).
To run a program as root with sudo the user must specify the correct path, e.g.
sudo /usr/sbin/visudo instead of just sudo visudo or su -c visudo.

Changing the default PATH for normal users to include /sbin, /usr/sbin as well as
/usr/local/sbin would be a great thing for simplifying command line usage for
normal users.

If /sbin, /usr/sbin and /usr/local/sbin are added at the end of the PATH there
should be no problems for existing environments if there are programs with the
same name in /sbin and /bin…

I know that these changes are late in the release cycle so I suggest to make the
changes for Jessie.

cheers,
Ulrich