Can now embed the negative sense of a condition.

Can now embed the negative sense of a condition.

Added new condition embedding syntax:
    expr inwhen cond     - The transitions into the machine (starting transitions).
    expr outwhen cond    - The pending transitions out of the machine.

git-svn-id: http://svn.complang.org/ragel/trunk@205 052ea7fc-9027-0410-9066-f65837a77df0