[RFC/PATCH v4] Better control of the tests run by a test suite

[Ilya Bobyr <ilya.bobyr@gmail.com>]

This patches add `--run` option to the test suites to allow one to run
individual tests out of the test suite.  Like this:

    ./t0000-basic.sh --run='-4,7,9-12,15-'

Previous version:

    [RFC/PATCH v3] Better control of the tests run by a test suite
    http://www.mail-archive.com/git@vger.kernel.org/msg48304.html

This version addresses comments by Junio[1] and Eric Sunshine[2].  I think that
they are mostly minor changes.  

[1] http://www.mail-archive.com/git@vger.kernel.org/msg48454.html
    http://www.mail-archive.com/git@vger.kernel.org/msg48455.html

[2] http://www.mail-archive.com/git@vger.kernel.org/msg48463.html

I've replied to those messages. There are two comments from Junio that did not
result in changed.  All the others have been addressed I hope.

Ilya Bobyr (3):
  test-lib: Document short options in t/README
  test-lib: tests skipped by GIT_SKIP_TESTS say so
  test-lib: '--run' to run only specific tests

 t/README         |   85 +++++++++++-
 t/t0000-basic.sh |  419 +++++++++++++++++++++++++++++++++++++++++++++++++++++-
 t/test-lib.sh    |  119 +++++++++++++++-
 3 files changed, 611 insertions(+), 12 deletions(-)