lualoader: Use cli_execute_unparsed for commands passed in via loader.conf

This applies to:
- exec
- [module]_before
- [module]_error
- [module]_after

Before this commit, these used loader.perform to execute them as a pure,
unsalted loader command. This means that they were not able to take
advantage of any Lua-salted loader commands, like boot and autoboot, or pure
Lua loader commands (functions attached to the 'cli' module).

They now have access to the full arsenal, just shy of being able to execute
arbitrary Lua.

stand/lua/config.lua

@@ -109,7 +109,7 @@ local pattern_table = {
 	{
 		str = "^%s*exec%s*=%s*\"([%w%s%p]-)\"%s*(.*)",
 		process = function(k, _)
-			if loader.perform(k) ~= 0 then
+			if cli_execute_unparsed(k) ~= 0 then
 				print(MSG_FAILEXEC:format(k))
 			end
 		end,
@@ -290,25 +290,25 @@ function config.loadmod(mod, silent)
 				str = str .. k
 			end
 			if v.before ~= nil then
-				pstatus = loader.perform(v.before) == 0
+				pstatus = cli_execute_unparsed(v.before) == 0
 				if not pstatus and not silent then
 					print(MSG_FAILEXBEF:format(v.before, k))
 				end
 				status = status and pstatus
 			end
 
-			if loader.perform(str) ~= 0 then
+			if cli_execute_unparsed(str) ~= 0 then
 				if not silent then
 					print(MSG_FAILEXMOD:format(str))
 				end
 				if v.error ~= nil then
-					loader.perform(v.error)
+					cli_execute_unparsed(v.error)
 				end
 				status = false
 			end
 
 			if v.after ~= nil then
-				pstatus = loader.perform(v.after) == 0
+				pstatus = cli_execute_unparsed(v.after) == 0
 				if not pstatus and not silent then
 					print(MSG_FAILEXAF:format(v.after, k))
 				end