patch 7.4.1384
Problem:    It is not easy to use a set of plugins and their dependencies.
Solution:   Add packages, ":loadopt", 'packpath'.
diff --git a/runtime/optwin.vim b/runtime/optwin.vim
index 314e7f3..46a5ee0 100644
--- a/runtime/optwin.vim
+++ b/runtime/optwin.vim
@@ -1,7 +1,7 @@
 " These commands create the option window.
 "
 " Maintainer:	Bram Moolenaar <Bram@vim.org>
-" Last Change:	2015 Nov 10
+" Last Change:	2016 Feb 21
 
 " If there already is an option window, jump to that one.
 if bufwinnr("option-window") > 0
@@ -228,6 +228,8 @@
 endif
 call append("$", "runtimepath\tlist of directories used for runtime files and plugins")
 call <SID>OptionG("rtp", &rtp)
+call append("$", "packpath\tlist of directories used for plugin packages")
+call <SID>OptionG("pp", &pp)
 call append("$", "helpfile\tname of the main help file")
 call <SID>OptionG("hf", &hf)