[PATCH v3 0/4] Support for running tests outside t/ + don't run a TODO test

This *really* v3, I just sent another copy of v2 unchanged accidentally (this is really not my day). This one:

 * Fixes a trivial shell syntax error in the last patch (oops!)

 * Uses #!$SHELL_PATH for a shebang instead of #!/bin/sh in the file
   we're about to write out. This now passes e.g. on Solaris which has
   an insane /bin/sh.

As an aside there's a bunch of other things in our tests that are writing out shellscripts with a #!/bin/sh shebang instead of #!$SHELL_PATH. These are passing purely by accident since they just happen to use shell syntax that doesn't run afoul of grumpy old shells like Solaris's /bin/sh.

Ævar Arnfjörð Bjarmason (4):
  test-lib: Use $TEST_DIRECTORY or $GIT_BUILD_DIR instead of $(pwd) and
    ../
  test-lib: Use "$GIT_BUILD_DIR" instead of "$TEST_DIRECTORY"/../
  test-lib: Allow overriding of TEST_DIRECTORY
  t/t0000-basic.sh: Run the passing TODO test inside its own test-lib

 t/t0000-basic.sh |   31 +++++++++++++++++++++++++++++++
 t/test-lib.sh    |   39 +++++++++++++++++++++++----------------
 2 files changed, 54 insertions(+), 16 deletions(-)