ARM port of testsuite and general testsuite fixes

[Roland McGrath]

> I don't know the nuances of the TCL language.

Noone wants to.

> In the grammar, [...]

That is a laughably generous term to use in reference to tcl.  Values
aren't typed.  It's a string with {}s in it, or without {}s in it, or
something.  It's hard to tell.  It's parsed into a list when used as a
list.  

I don't know what difference any of this makes to the case in question, it
just came to mind as why gratuitous \s might be relevant.