BIG REORGANIZATION.

Reorganize directory structure for inclusion of cd-paranoia. Works for
GNU/Linux. Other OS's may be broken. Regression test output needs to
be adjusted too.

Move:
lib/driver (split off of lib)
lib/iso9660 (split off of lib)

Add from paranoia:
lib/cdda_interface
lib/paranoia
src/paranoia

Also made some small changes to capability indentification to show
more reading capabilties and show that.

cd-info now shows the total disc size.

src/cd-paranoia/buffering_write.c

@@ -0,0 +1,73 @@
+/* Eliminate teeny little writes.  patch submitted by 
+   Rob Ross <rbross@parl.ces.clemson.edu> --Monty 19991008 */
+
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <stdio.h>
+
+#define OUTBUFSZ 32*1024
+
+#include "utils.h"
+#include "buffering_write.h"
+
+
+/* GLOBALS FOR BUFFERING CALLS */
+static int  bw_fd  = -1;
+static long bw_pos = 0;
+static char bw_outbuf[OUTBUFSZ];
+
+
+/* buffering_write() - buffers data to a specified size before writing.
+ *
+ * Restrictions:
+ * - MUST CALL BUFFERING_CLOSE() WHEN FINISHED!!!
+ *
+ */
+long buffering_write(int fd, char *buffer, long num)
+{
+	if (fd != bw_fd) {
+		/* clean up after buffering for some other file */
+		if (bw_fd >= 0 && bw_pos > 0) {
+			if (blocking_write(bw_fd, bw_outbuf, bw_pos)) {
+				perror("write (in buffering_write, flushing)");
+			}
+		}
+		bw_fd  = fd;
+		bw_pos = 0;
+	}
+
+	if (bw_pos + num > OUTBUFSZ) {
+		/* fill our buffer first, then write, then modify buffer and num */
+		memcpy(&bw_outbuf[bw_pos], buffer, OUTBUFSZ - bw_pos);
+		if (blocking_write(fd, bw_outbuf, OUTBUFSZ)) {
+			perror("write (in buffering_write, full buffer)");
+			return(-1);
+		}
+		num -= (OUTBUFSZ - bw_pos);
+		buffer += (OUTBUFSZ - bw_pos);
+		bw_pos = 0;
+	}
+	/* save data */
+	memcpy(&bw_outbuf[bw_pos], buffer, num);
+	bw_pos += num;
+
+	return(0);
+}
+
+/* buffering_close() - writes out remaining buffered data before closing
+ * file.
+ *
+ */
+int buffering_close(int fd)
+{
+	if (fd == bw_fd && bw_pos > 0) {
+		/* write out remaining data and clean up */
+		if (blocking_write(fd, bw_outbuf, bw_pos)) {
+			perror("write (in buffering_close)");
+		}
+		bw_fd  = -1;
+		bw_pos = 0;
+	}
+	return(close(fd));
+}