Fixes warnings like:
```
unittest/libmariadb/bulk1.c: In function ‘bulk1’:
unittest/libmariadb/bulk1.c:77:43: error: ‘calloc’ sizes specified with ‘sizeof’ in the earlier argument and not in the later argument [-Werror=calloc-transposed-args]
77 | lengths= (unsigned long *)calloc(sizeof(long), TEST_ARRAY_SIZE);
| ^~~~
unittest/libmariadb/bulk1.c:77:43: note: earlier argument should specify number of elements, later size of each element
unittest/libmariadb/bulk1.c:78:39: error: ‘calloc’ sizes specified with ‘sizeof’ in the earlier argu
ment and not in the later argument [-Werror=calloc-transposed-args]
78 | vals= (unsigned int *)calloc(sizeof(int), TEST_ARRAY_SIZE);
| ^~~
```
The calloc prototype is:
```
void *calloc(size_t nmemb, size_t size);
```
So, just swap the number of members and size arguments to match the
prototype, as we're initialising N struct of size Y. GCC then sees we're not
doing anything wrong.
Signed-off-by: Sam James <sam@gentoo.org>
- changed plugin API to avoid crashes: Oracle/MariaDB changed
structure several times without updating interface version.
- ABI fixes: moved additional net items to net->extension (connection
handler and com_multi buffer)
changed type of length parameter in mysql_stmt_prepare,
mysql_real_query, mysql_stmt_send_long_data (incl. async _start
functions) from unsigned long to size_t.
Fixed warnings
