/* Read a line, up to the next newline, from STREAM, and store it in *LINEPTR.
*LINEPTR is a pointer returned from malloc (or NULL), pointing to *LINESIZE
bytes of space. It is realloc'd as necessary. Reallocation is limited to
/* Read a line, up to the next newline, from STREAM, and store it in *LINEPTR.
*LINEPTR is a pointer returned from malloc (or NULL), pointing to *LINESIZE
bytes of space. It is realloc'd as necessary. Reallocation is limited to