man fixes

Add two cross references, expansion of PAG, and expansion of the -c
argument to the OpenBSD tech list earlier.

From Lars Nooden

appl/afsutil/pagsh.1

@@ -40,7 +40,7 @@
 creates a new credential cache sandbox
 .Sh SYNOPSIS
 .Nm
-.Op Fl c
+.Op Fl c Ar command-string
 .Op Fl h | Fl -help
 .Op Fl -version
 .Op Fl -cache-type= Ns Ar string
@@ -49,7 +49,9 @@ creates a new credential cache sandbox
 Supported options:
 .Bl -tag -width Ds
 .It Xo
-.Fl c
+.Fl c Ar command-string
+Executes command(s) contained in
+.Ar command-string .
 .Xc
 .It Xo
 .Fl -cache-type= Ns Ar string
@@ -66,7 +68,7 @@ Supported options:
 .Nm
 creates a new credential cache sandbox for the user to live in.
 If AFS is installed on the computer, the user is put in a newly
-created PAG.
+created Process Authentication Group (PAG).
 .Pp
 For Kerberos 5, the credential cache type that is used is the same as
 the credential cache type that was used at the time of
@@ -89,4 +91,5 @@ $ klist
 klist: No ticket file: /tmp/krb5cc_03014a
 .Ed
 .Sh SEE ALSO
-.Xr afslog 1
+.Xr afslog 1 ,
+.Xr kinit 1