So 5.5 and 5.6 have diverged with 5.6.13:
"The C API libmysqlclient shared-library .so files now have version 18.1.0 (up from version 18.0.0 used in MySQL 5.5). (Bug #16809055)".
Which necessitates a 5.6 shared-compat package.
So 5.5 and 5.6 have diverged with 5.6.13:
"The C API libmysqlclient shared-library .so files now have version 18.1.0 (up from version 18.0.0 used in MySQL 5.5). (Bug #16809055)".
Which necessitates a 5.6 shared-compat package.