Update runtime files.

Includes changing &sw to shiftwidth() for all indent scripts.
diff --git a/runtime/indent/rpl.vim b/runtime/indent/rpl.vim
index 07bfd06..fab258e 100644
--- a/runtime/indent/rpl.vim
+++ b/runtime/indent/rpl.vim
@@ -1,7 +1,7 @@
 " Vim indent file
 " Language:	RPL/2
 " Version:	0.2
-" Last Change:	2005 Mar 28
+" Last Change:	2017 Jun 13
 " Maintainer:	BERTRAND Joël <rpl2@free.fr>
 
 " Only load this indent file when no other was loaded.
@@ -32,16 +32,16 @@
   if prevstat =~? '\<\(if\|iferr\|do\|while\)\>' && prevstat =~? '\<end\>'
   elseif prevstat =~? '\(^\|\s\+\)<<\($\|\s\+\)' && prevstat =~? '\s\+>>\($\|\s\+\)'
   elseif prevstat =~? '\<\(if\|iferr\|then\|else\|elseif\|select\|case\|do\|until\|while\|repeat\|for\|start\|default\)\>' || prevstat =~? '\(^\|\s\+\)<<\($\|\s\+\)'
-    let ind = ind + &sw
+    let ind = ind + shiftwidth()
   endif
 
   " Subtract a shiftwidth from then, else, elseif, end, until, repeat, next,
   " step
   let line = getline(v:lnum)
   if line =~? '^\s*\(then\|else\|elseif\|until\|repeat\|next\|step\|default\|end\)\>'
-    let ind = ind - &sw
+    let ind = ind - shiftwidth()
   elseif line =~? '^\s*>>\($\|\s\+\)'
-    let ind = ind - &sw
+    let ind = ind - shiftwidth()
   endif
 
   return ind