[RFE/PATCH] git-fetch-rebase

Hi,

For those who use git as a better centralized SCM, it became a common
practice to do git-fetch + git-rebase instead of just git-pull, so that
the history is linear, instead of being full of tiny merges. 

However, there is no git command for such common procedure (at least
AFAIK). Attached is a variation of the git-pull porcelain (taken from
git version debian.1.5.3.7.1-dirty) that instead of doing git-fetch +
git-merge, it does git-fetch + git-rebase.

I've been using this git-fetch-rebase script frequently, and it really
boosts my productivity (I use it when updating from the main repository,
and before pushing my changes to the main repository).

I'd like see this script, or an equivalent command, included the git
distribution.

Cheers,

José Fonseca