merge with stable

tutorial: fix note We need a double semin colon, otherwise this is a comment.

tutorial: warn about rollback beeing obsolete

tutorial: use grab instead of rebase. grab as now the advantage to move the working directory.

tutorial Clarify "." explanation

tutorial: update divergent changeset section Still not there but less fuzy.

tutorial: use long form of argument for the sake of clarity

tutorial: fix some various typo

tutorial Display the help of appropriate command in section that need writting

doc: some documentation on the configuration part of the tutorial Trying to make it less obscure on first contact

doc: smarter make file We regenerate the tutorials when needed only

doc: use a symbolic link to point to the tutorial the file was lagging behind a ton.

import: warn about new unstable changesets 'hg import' can add new unstable changesets, for example when invoked with '--hidden' or '--exact', or when the working directory parent already is unstable.

evolve: show progress The total count may be too low on occasion. Not sure why. gaved up at testing this, can't get stable result.