Add the 'O' (post using real name) restriction flag.

Oh, QWKnet nodes ('Q' restricted accounts) are impacted by this restriction
since the poster's name isn't taken from the user account anyway.

text/menu/restrict.asc

-A=ANSI              H=                  O=                  V=Voting
-B=Beep              I=                  P=Post              W=Auto-message
+A=ANSI              H=                  O=Post w/RealName   V=Voting
+B=Beep              I=                  P=Post on any sub   W=Auto-message
 C=Chat              J=Quoting           Q=QWK Network Node  X=External Programs
 D=Download          K=Read Mail Sent    R=Remove Files      Y=
 E=E-mail	    L=Logon one/day	S=Email Sysop	    Z=