ok tracey

This makes it easy to deal with files that were deleted from disk by external tooling which modified the work tree. Such files are left in missing (!) status and can now be marked for deletion in bulk via 'got rm -s\! -R .' For consistency, modified (M) files can now be removed with 'got rm -s M' which implies 'got rm -f'. Prompted by feedback from krw@

Advantages over using grep are that the list of codes is validated against a list of known status codes, and that it is easier to match staged files which can display status codes in one or both of two columns. Prompted by feedback from krw@

Remove the alias 'got in' for 'got init'. The 'in' alias was too close to either 'init' or 'info'. ok tracey, millert

with input from + ok tracy and millert

requested by matthieu@