[PATCH v2 7/7] bisect: allows any terms set by user

This message's goal is to explained where am I on the bisect functions.

-git bisect replay now work with any terms. -I took account of most of the last reviews (coding style, double sed ...) -'git bisect terms' without arguments now display the current terms -bisect_terms : if a bisection has already started, a more verbose message is displayed -I solved a merge conflict in bisect.c due to the update of master branch.

To submit a v3 I would need answer about how we rebase the commit history and what do we do to simplify the life of the user with the terms (see my last mails). I was thinking of: -a config variable that would say :"as long as I don't reset keep the terms of the previous bisection" or we could decided that this is the default behaviour of bisect.

-two config variables to choose default terms 

I may have less time in the next days but I would like to submit a v3.