Add the settabvar() and gettabvar() functions.
Various runtime file updates.
diff --git a/runtime/doc/gui.txt b/runtime/doc/gui.txt
index 73663e0..925a491 100644
--- a/runtime/doc/gui.txt
+++ b/runtime/doc/gui.txt
@@ -678,7 +678,7 @@
default toolbar is setup in menu.vim.
The display of the toolbar is controlled by the 'guioptions' letter 'T'. You
can thus have menu & toolbar together, or either on its own, or neither.
-The appearance is controlled by the 'toolbar' option. You can chose between
+The appearance is controlled by the 'toolbar' option. You can choose between
an image, text or both.
*toolbar-icon*