[regression] TextBox: type=file cut off in FF, strange in IE

[bill]

As of [21560] (see #10840), there are problems with type=file TextBox's. The biggest issue is on FF, where the button is cut off:

Arguably, there's also an issue with other browsers in the rendering looks a little strange, with the button inside the border:

In trunk on IE:

In 1.4 it looked like:

[bill]

cut off button on FF

[bill]

expected display, on 1.4

[bill]

actual display, on trunk

[Douglas Hays]

possible fix using a single node template

[Douglas Hays]

Bill, please review. I substitute in an alternate template for type=hidden|file OR if templateString="input". The last check is to allow people who are broken with the new template to achieve some level of backward compatibility.

[bill]

Seems good.

[Douglas Hays]

(In [22145]) Fixes #11049, #11058. For TextBox? widgets of type file|hidden, swap the multi-node template for a single INPUT version since styling capabilities are only minimally required/allowed. Added the ability to select the single node template (for backward compatibility) by setting templateString="input".