Git and cogito uses different exclude files

This has probably been pointed out previously, but I couldn't seem to
find it in the archives.

'git status' and 'cg-status'/'stg status' uses different locations for
the exclude files. git expects .git/info/exclude and cogito and stgit
expects .git/exclude. This is easily solved by a symlink but it could be
nice if common files have a single correct location. :)

Rgds
Pierre