Textarea with _BidiSupport

# Dynamically changed textDir.

## Textarea

dijit.form.Textarea, initially filled, markup created Hello world! | dijit.form.Textarea, initially filled, programmatically created:
--- | ---
dijit.form.Textarea, initially blank: | dijit.form.Textarea, initially blank, programmatically created:

## TextBox

dijit.form.TextBox, initially filled, markup created: | dijit.form.TextBox, initially filled, programmatically created:
--- | ---
dijit.form.TextBox, initially blank, markup created: | dijit.form.Textarea, initially blank, programmatically created:

## SimpleTextarea

dijit.form.SimpleTextarea, initially filled, markup created שלום עולם, שלום לכולם אין יותר כיף מדוג'ו! | dijit.form.SimpleTextarea, initially filled, programmatically created:
--- | ---
dijit.form.SimpleTextarea, initially blank, markup created: | dijit.form.Textarea, initially blank, programmatically created:

dijit.form.ComboBox, markup