Fixed an inconsistency in the value of p following an error. In the C directly

Fixed an inconsistency in the value of p following an error. In the C directly
executable code (rlgen-cd -G2) p was left at the character where the error
occurred, which is correct. In all other code generators it was left at the
following character. This was fixed. Now in all code generators p is left at
the character where the error occurred.

git-svn-id: http://svn.complang.org/ragel/trunk@225 052ea7fc-9027-0410-9066-f65837a77df0