[Developers] bug that caused -gh option to fail in some models.

[dave fournier]

In df1b2lp10.cpp around line 19 in function
void test_smartlist::reset(void)
change SEEK_CUR to SEEK_SET



void test_smartlist::reset(void)
{
   bptr=buffer;
   eof_flag=0;
   /*off_t pos=*/lseek(fp,0L,SEEK_SET);
   written_flag=0;
   end_saved=0;
}