Added checks for target->type->read/write_memory, soft_reset_halt and...

Added checks for target->type->read/write_memory, soft_reset_halt and run_algorithm that the target has been examined.

git-svn-id: svn://svn.berlios.de/openocd/trunk@581 b42882b7-edfa-0310-969c-e2dbd0fdcd60