ARM port of testsuite and general testsuite fixes

[Quentin Barnes]

>The difference in tcl between {foo bar} and {foo\ bar} is whether as a list
>it's considered two elements or one, so that might be the issue.

I don't know the nuances of the TCL language.  In the grammar, do
brackets always define a list, or only when the preceding keyword
is syntactically expecting a list to follow?


If whitespace is being parsed as a list separator, I would expect
these two statements to be equivalent:
        -re {^hi there} ...
and:
        -re {^hi     there} ...

But they are not.

I couldn't come up with a test case where escaping the space made
any actual difference.  (Just conceptual difference?)  Is there a
subtle case where the distinction matters?

Quentin