MDEV-13593 dlopen failure loading after upgrade from 10.2.6 to 10.2.8
MDEV-13619 libmariadb missing version info for libmariadbclient_18
MDEV-13615 MariaDB 10.2 client library (Debian 9/Stretch) not compatible with Perl MySQL DBI module
Debian 9, just for the fun of it, I presume, renamed
version nodes in the libmysqlclient.so, introducing
new incompatible with anything, version
"libmariadbclient_18". This version will supposedly
disappear in Debian 10 (breaking compatibility again).
But libmariadb.so.3 needs to be compatible with
Debian 8 (libmysqlclient_18),
Debian 9 (libmariadbclient_18), and, in the future,
Debian 10 (libmariadb_3?). At the same time!
To achieve this remarkable feat we version old symbols
with libmysqlclient_18, and (!) alias them into
libmariadbclient_18. New symbols are versioned under
libmariadb_3.
Added version info for shared object:
libmysqlclient_18 node contains all symbols for libmysql compatibiliry
libmariadb_3 node contains all mariadb specific symbols which are not supported by libmysql
