Add the settabvar() and gettabvar() functions.
Various runtime file updates.
diff --git a/runtime/doc/pi_netrw.txt b/runtime/doc/pi_netrw.txt
index 41c6bd6..b57585b 100644
--- a/runtime/doc/pi_netrw.txt
+++ b/runtime/doc/pi_netrw.txt
@@ -456,7 +456,7 @@
On the other hand, thanks go to Jan M. for pointing out the many
vulnerabilities that netrw (and vim itself) had had in handling "crafted"
filenames. The |shellescape()| and |fnameescape()| functions were written in
-response by Bram Moolenaar to handle these sort of problems, and netrw has
+response by Bram Moolenaar to handle this sort of problems, and netrw has
been modified to use them. Still, my advice is, if the "filename" looks like
a vim command that you aren't comfortable with having executed, don't open it.