The p varialbe is now set up at the beginning of a scanner action, rather than

The p varialbe is now set up at the beginning of a scanner action, rather than
at the end. This leaves scanner actions free to manipulate p and removes the
need for the special holdTE and execTE (TE for tokend) versions of hold and
exec. It also removes the need to set p = tokend-1 immediately before any
control flow.

The error handler in LmSwitch actions is now generated by the frontend, rather
than the backend. This became possible when the creation of the error state was
moved to the frontend.

git-svn-id: http://svn.complang.org/ragel/trunk@238 052ea7fc-9027-0410-9066-f65837a77df0