PATCH: enable Ada test suite

[Joseph S. Myers]

The output of the Ada testsuite seems very verbose compared to the other
testsuites.  Generally it would be better only to display anything for
tests that fail or succeed unexpectedly , while running the tests that
behave as expected silently.

You asked about documentation of the format of Dejagnu .sum files - this
is at <http://www.gnu.org/software/dejagnu/manual/outputfiles.html>.  The
output displayed by make check is a subset of the .sum output (excluding
UNSUPPORTED, PASS and XFAIL lines) while the current output of the Ada
testsuite is more like the level of detail that goes in the .log files.  
(Does the current Ada testsuite leave an overall log or summary file at
all - that should be diffed between runs before/after a patch for
regression testing?)

See also contrib/test_summary, the script parsing .sum files to send
results to gcc-testresults.

The Ada testsuite seems to leave rather a lot of files behind in the build
directory (the convention is for testsuites to delete files associated
with successful tests and leave behind only those for unsuccessful tests).

-- 
Joseph S. Myers
jsm@polyomino.org.uk