[PATCH 0/8] My set of stgit helper scripts (update)

These are updated versions of the scripts already posted. Minor updates for most (notably some compatibility with 0.12), except for stg-cvs which got a number of fixes, as well as a huge enumeration of limitations (I'll probably rewrite it as a glue to get tailor called from standard stgit commands).

This brings 2 new scripts:

- stg-mdiff to display diffs of diffs (very preliminar and naive
implementation, needs much work)

- sit-sink to bury one or more patch down the stack (eg. to commit
them but keep other patches under stgit control).  Catalin will love
to learn that this is a perl script ;).  I'll rewrite it as a standard
stgit command soon (with a slight difference as to how the --to
argument is interpreted), but others may want to use it or just
comment before that.

Best regards,