[rfc] New test directory gdb.pr gdb.gnats

[Andrew Cagney <ac131313 at cygnus dot com>]

Hello,

(someone on gdb-patches suggested this, they don't appear to have
followed it up)

GDB's bug database is slowly accumulating bugs.  If anyone ever fixes
one of these then it would nice to able to add a testcase to confirm
that each specific problem didn't reoccur.  I think it would also be
nice to not clutter gdb.base up with tests that are simply checking that
a single specific bug doesn't reoccur.  With this in mind, I'd like to
follow up the suggestion that there be a directory ``gdb.pr''
(gdb.gnats?) created that had the potential to contain a NNNN.exp test
for each PR reported in the PUBLIC bug tracking database. 

Of course I'm not proposing anything silly such as there _has_ to be a
test for each PR or that PR's can only be closed if there is a test or
that ..... This is a community group and community groups tend to only
do what members of the group are actually interested in doing.

Thinking about it, there is one thing I should probably emphasize.  I
suspect this is a new direction for GDB.  It means that we're
differentiating between tests for specific bugs VS tests confirming
certain generic functionality still works.  It could be argued that
instead of adding specific tests, we should be extending the existing
test framework.  To be honest, I think both should be occurring in
parallel.

Again, comments thoughts, suggestions, especially from the people that
started the original thread on gdb-patches.  Oh, and definitly from the
testsuite maintainers :-)

	Andrew