Deb: install libmysqld.so and libmysqld.so.19 in correct packages

The versioned so-file belongs to the run-time package and the unversioned
symlink shall be in the development package.

debian/control

@@ -93,8 +93,8 @@ Architecture: any
 Section: libs
 Depends: ${misc:Depends}, ${shlibs:Depends}
 Multi-Arch: same
-Breaks: libmariadbd-dev (<< ${source:Version}), libmysqld-dev
-Replaces: libmariadbd-dev (<< ${source:Version}), libmysqld-dev
+Breaks: libmariadbd-dev (<< ${source:Version})
+Replaces: libmariadbd-dev (<< ${source:Version})
 Description: MariaDB embedded database, shared library
  MariaDB is a fast, stable and true multi-user, multi-threaded SQL database
  server. SQL (Structured Query Language) is the most popular database query

debian/libmariadbd-dev.install

 usr/lib/*/libmysqld.a
+usr/lib/*/libmysqld.so
 usr/bin/mariadb_config

debian/libmariadbd19.install

-usr/lib/*/libmysqld.so*
+usr/lib/*/libmysqld.so.*