Return error codes instead of exiting, thus making sure that we exit

only via main() so that the exitspecs are properly applied.

When reading input data from a file, remember how many bytes were read
and write and verify only that many bytes.

Don't complain when an input file size is smaller than the memory size
we are programming.  This is normal.


git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@44 81a1dc3b-b13d-400b-aceb-764788c761c2

fileio.h

@@ -59,6 +59,6 @@ char * fmtstr ( FILEFMT format );
 int fileio_setparms ( int op, struct fioparms * fp );
 
 int fileio ( int op, char * filename, FILEFMT format, 
-             struct avrpart * p, AVRMEM memtype );
+             struct avrpart * p, AVRMEM memtype, int size );
 
 #endif