[RFA/testsuite/ada] re-implement make clean & distclean

[Joel Brobecker]

> Except that, like Mark implies, I tend to keep my notes in my working
> directory.  If I'm debugging a bunch of testcases and I needed to keep
> notes about what was going on, I'd be quite surprised if make clean
> deleted my notes!

Hum, I hadn't thought about that. I keep my own notes in one central
directory - mostly to avoid losing them more than anything, it's hard
to keep track of what is in my hard drive sometimes...

I don't know how else to solve our issue. Maintaining a list of files
to delete is a royal pain :-(.

> I don't object too strongly, though, if others like this approach.
> I wouldn't put them in that directory anyway, just in gdb/testsuite/.

Fortunately, I only suggest this for gdb.ada, so very few people would
be impacted. Perhaps the lack of consistency is a bad thing?

-- 
Joel