git-test-sequence: Support @{u}

[ismell]

Get the list of commits before detaching. This allows:

git test-sequence --force @{u}.. ./test-build.sh

I switched the script to bash so we could use arrays.

I also moved the detach below the args parsing. This way --force is not passed to the rev-list.

Signed-off-by: Raul E Rangel [email protected]