mysqlbinlog now prints "# Number of rows" and stops on errors

Main problem was that no log-event print function checked for disk
full error on the IO_CACHE.
All changes in this patch only affects mysqlbinlog, not the server!

- Changed all log-event print functions to return 1 on error
- Fixed memory usage when not using --flashback.
- Added printing of number of rows in row events. Can be disabled with
  --print-row-count=0
- Print annotated rows when using mysqlbinlog --short-form
- Fixed that mysqlbinlog --debug works
- Fixed create_drop_binlog.test test failure
- Reorganized fields in PRINT_EVENT_INFO to be according to size to
  optimize storage
- Don't change print_row_event_position or print_row_counts if set by user
- Remove some testing of argument to my_free is 0
- base64-output=never is now supported and works in all context
- Updated help information for --base64-output and --short-form
- print_row_count is now on by default. Reset automatically if --short-form
  is used
- Removed obsolote warning for mysql 5.6.0
- More DBUG_PRINT for mysqltest.cc
- my_b_write_byte() now checks for flush failures. This fixed a memory
  overrun on disk full
- my_b_printf() now returns 1 on failure, 0 on ok.  This simplifies code
  and no old code was using the old return value of my_b_printf().
- my_b_Write_backtick_quote() now returns 1 on failure and 0 on ok
- Fixed some error conditions in log printing that was not previously
  handled.
- Slave_rows_error_report() can now handle longlong positions
- Write_on_release_cache() rewritten so that we can detect errors
  on flush. Not depending on automatic release anymore.
- Changed types for Pos and End_log_pos to 64 bit in SHOW BINLOG EVENTS
- Fixed that copy_event_cache_to_string_and_reinit() works with strings
  longer than 4G (Changed to use LEX_STRING instead of String)
- Restricted binlog_rows_event_max_size to UINT32_MAX-1 as String's are
  anyway restricted to UINT32_MAX
- Fixed bug in rpl_binlog_state::write_to_iocache() which hide write
  failures (duplicate variable name)
- Fixed bug in String::append if original string was not allocated
- Stop mysqlbinlog output at once if there is an error.
- Before printing error message, flush result file. This ensures that
  the error message is printed last. (Easier to find)

mysql-test/r/mysqlbinlog_row_compressed.result

@@ -73,6 +73,7 @@ BEGIN
 ###   @7=6 /* INT meta=0 nullable=1 is_null=0 */
 ###   @8=7 /* INT meta=0 nullable=1 is_null=0 */
 ###   @9='' /* STRING(1) meta=65025 nullable=1 is_null=0 */
+# Number of rows: 1
 # at 967
 #<date> server id 1  end_log_pos 1040 CRC32 XXX 	Query	thread_id=5	exec_time=x	error_code=0
 SET TIMESTAMP=X/*!*/;
@@ -101,6 +102,7 @@ BEGIN
 ###   @7=6 /* INT meta=0 nullable=1 is_null=0 */
 ###   @8=7 /* INT meta=0 nullable=1 is_null=0 */
 ###   @9=NULL /* STRING(1) meta=65025 nullable=1 is_null=1 */
+# Number of rows: 1
 # at 1281
 #<date> server id 1  end_log_pos 1354 CRC32 XXX 	Query	thread_id=5	exec_time=x	error_code=0
 SET TIMESTAMP=X/*!*/;
@@ -129,6 +131,7 @@ BEGIN
 ###   @7=6 /* INT meta=0 nullable=1 is_null=0 */
 ###   @8=7 /* INT meta=0 nullable=1 is_null=0 */
 ###   @9='A' /* STRING(1) meta=65025 nullable=1 is_null=0 */
+# Number of rows: 1
 # at 1596
 #<date> server id 1  end_log_pos 1669 CRC32 XXX 	Query	thread_id=5	exec_time=x	error_code=0
 SET TIMESTAMP=X/*!*/;
@@ -157,6 +160,7 @@ BEGIN
 ###   @7=6 /* INT meta=0 nullable=1 is_null=0 */
 ###   @8=7 /* INT meta=0 nullable=1 is_null=0 */
 ###   @9='A' /* STRING(1) meta=65025 nullable=1 is_null=0 */
+# Number of rows: 1
 # at 1909
 #<date> server id 1  end_log_pos 1982 CRC32 XXX 	Query	thread_id=5	exec_time=x	error_code=0
 SET TIMESTAMP=X/*!*/;
@@ -218,6 +222,7 @@ BEGIN
 ###   @7=6 /* INT meta=0 nullable=1 is_null=0 */
 ###   @8=7 /* INT meta=0 nullable=1 is_null=0 */
 ###   @9='A' /* STRING(1) meta=65025 nullable=1 is_null=0 */
+# Number of rows: 4
 # at 2225
 #<date> server id 1  end_log_pos 2298 CRC32 XXX 	Query	thread_id=5	exec_time=x	error_code=0
 SET TIMESTAMP=X/*!*/;
@@ -298,6 +303,7 @@ BEGIN
 ###   @7=6 /* INT meta=0 nullable=1 is_null=0 */
 ###   @8=7 /* INT meta=0 nullable=1 is_null=0 */
 ###   @9='A' /* STRING(1) meta=65025 nullable=1 is_null=0 */
+# Number of rows: 3
 # at 2561
 #<date> server id 1  end_log_pos 2634 CRC32 XXX 	Query	thread_id=5	exec_time=x	error_code=0
 SET TIMESTAMP=X/*!*/;
@@ -359,6 +365,7 @@ BEGIN
 ###   @7=6 /* INT meta=0 nullable=1 is_null=0 */
 ###   @8=7 /* INT meta=0 nullable=1 is_null=0 */
 ###   @9='A' /* STRING(1) meta=65025 nullable=1 is_null=0 */
+# Number of rows: 4
 # at 2861
 #<date> server id 1  end_log_pos 2934 CRC32 XXX 	Query	thread_id=5	exec_time=x	error_code=0
 SET TIMESTAMP=X/*!*/;
@@ -420,6 +427,7 @@ BEGIN
 ###   @7=6 /* INT meta=0 nullable=1 is_null=0 */
 ###   @8=7 /* INT meta=0 nullable=1 is_null=0 */
 ###   @9='A' /* STRING(1) meta=65025 nullable=1 is_null=0 */
+# Number of rows: 4
 # at 3154
 #<date> server id 1  end_log_pos 3227 CRC32 XXX 	Query	thread_id=5	exec_time=x	error_code=0
 SET TIMESTAMP=X/*!*/;