Test verbosity improved, new implicit rules

Verbosity now handled for tests in the same way as the main library
compilation by using the testquiet command.

Executables now have implicit rules in gm

Test verbosity improved, new implicit rules

Verbosity now handled for tests in the same way as the main library
compilation by using the testquiet command.

Executables now have implicit rules in gmakefile instead of being
explicit in the testfiles file.

Some prototype code is in place for doing implicit rules for running
the scripts, but it is not working.

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Prettify the output a bit more (spaces)

Improve failures reporting output

For tests that have lots of subtests, each label was repeated in
failures which can have lots of duplicate entries (e.g., with a for
loop). This removes the redund

Improve failures reporting output

For tests that have lots of subtests, each label was repeated in
failures which can have lots of duplicate entries (e.g., with a for
loop). This removes the redundant entries and puts the number of
failures for that test in parenthesis for a more compact representation.

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Updates based on team review

o report_tests.sh replaced by report_tests.py
o Example file conversion does not have spaces after comment character
per PETSc standards, and it is now parsed correctly