MDEV-5725: mysqld embedded libraries into libmariadbd19 Deb package

libmariadbd19 was intended to be added as the package that
included the libmysqld shared library. This was missing
from the debian control file.

The libmariadbd-dev package requires libmariadbd19 to provide
the shared library.

The shared libraries for embedded mysql will go into the libmariadbd18
package rather than the libmariadbd-dev development package.

/usr/bin/mariadb_config is a executable that assists embedded developers
to use the correctly correct header and library files during their
development.
Signed-off-by: Daniel Black <daniel.black@au.ibm.com>

debian/control

@@ -74,7 +74,8 @@ Architecture: any
 Section: libdevel
 Provides: libmysqld-dev
 Pre-Depends: ${misc:Pre-Depends}
-Depends: libmariadbclient-dev (= ${binary:Version}),
+Depends: libmariadbd19,
+         libmariadbclient-dev (= ${binary:Version}),
          ${misc:Depends},
          ${shlibs:Depends}
 Breaks: libmysqld-dev
@@ -87,6 +88,21 @@ Description: MariaDB embedded database, development files
  .
  This package includes the embedded server library development and header files.
 
+Package: libmariadbd19
+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
+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
+ language in the world. The main goals of MariaDB are speed, robustness and
+ ease of use.
+ .
+ This package includes a shared library for embedded MariaDB applications
+
 Package: libmariadbclient-dev
 Architecture: any
 Section: libdevel

debian/libmariadbd-dev.install

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

debian/libmariadbd18.install

-usr/lib/*/libmysqld.so.18

debian/libmariadbd19.install

+usr/lib/*/libmysqld.so*