Update runtime files.

Includes changing &sw to shiftwidth() for all indent scripts.
diff --git a/runtime/indent/cmake.vim b/runtime/indent/cmake.vim
index 421afcb..93a131b 100644
--- a/runtime/indent/cmake.vim
+++ b/runtime/indent/cmake.vim
@@ -68,19 +68,19 @@
     let ind = ind
   else
     if previous_line =~? cmake_indent_begin_regex
-      let ind = ind + &sw
+      let ind = ind + shiftwidth()
     endif
     if previous_line =~? cmake_indent_open_regex
-      let ind = ind + &sw
+      let ind = ind + shiftwidth()
     endif
   endif
 
   " Subtract
   if this_line =~? cmake_indent_end_regex
-    let ind = ind - &sw
+    let ind = ind - shiftwidth()
   endif
   if previous_line =~? cmake_indent_close_regex
-    let ind = ind - &sw
+    let ind = ind - shiftwidth()
   endif
 
   return ind