Add fine-grained capabilities for administrative actions

The Global Capabilities section in All-Projects can now be used to
grant subcommands that are available over SSH and were previously
restricted to only Administrators.

Bug: issue 48
Bug: issue 742
Change-Id: I7d8a931b174915191817ff845f1f9a846181d709
diff --git a/Documentation/cmd-kill.txt b/Documentation/cmd-kill.txt
index a76be84..57a98f7 100644
--- a/Documentation/cmd-kill.txt
+++ b/Documentation/cmd-kill.txt
@@ -18,7 +18,8 @@
 
 ACCESS
 ------
-Caller must be a member of the privileged 'Administrators' group.
+Caller must be a member of the privileged 'Administrators' group,
+or have been granted the 'Kill Task' global capability.
 
 SCRIPTING
 ---------