Add SimpleWrapper-based error checking for clearerr, feof, ferror, and perror.
Add SimpleWrapper-based error checking for clearerr, feof, ferror, and perror.

mheinsen/seec,seec-team/seec,mheinsen/seec,seec-team/seec,seec-team/seec,mheinsen/seec,seec-team/seec,mheinsen/seec,mheinsen/seec,seec-team/seec