#27 Remove sending status after every single step

[MJH]

In previous versions of AVaRICE, a complete processor status was sent after every instruction, apparently to prevent GDB from asking for the status itself. In GDB 7.6, this is not required: GDB only asks for the status after a code line (not instruction) was finished. By removing the frequent status read in AVaRICE, debugging can be sped up.

Please note that due to a regression in GDB 7.7, a GDB of that version will ask for a status word after every instruction.