compile regexp perl Test module

[Kevin Ryde]

The format of the failure messages from the perl "Test" module is not
quite the same as from its normal compiling,

        * progmodes/compile.el (compilation-error-regexp-alist): Add perl
        "Test" module error messages.

I've only ever bothered with the plain ok(X) form myself, which is the
first message shown in the comment, but I added the other styles too.
Sample foo.pl I used below.

compile.el.perl-test.diff
Description: Text document

foo.pl
Description: Perl program