Drop uid checking

[sunwire]

Can we drop checking if the user is root?

stenc/src/main.cpp

Lines 228 to 230 in ebabc39

	if (getuid() != 0) {
	errorOut("You must be root to read or set encryption options on a drive!");
	}

Now when we use a syslog for logs, at least under Linux, an ordinary user can use Stenc if he has the right to read the tape device and Stenc has set cap_sys_rawio capability.
https://man7.org/linux/man-pages/man7/capabilities.7.html
https://man7.org/linux/man-pages/man8/setcap.8.html

[jonasstein]

Dropping sounds good to me.
Could we then use the tape group too? We should add a section on permissions to the man page.

[jmwilson]

Yes, this is dumb to check. Would be good to see how the program fails with a nonprivileged user so the error message is not totally inscrutable.