MDEV-38532 Debian packages are missing many server include headers, such as handler.h

include headers needed to build plugins, same as in RPMs

Author: vuvova

debian/libmariadb-dev.install

@@ -23,6 +23,7 @@ usr/include/mariadb/mysql/plugin_auth.h
 usr/include/mariadb/mysql_com.h
 usr/include/mariadb/mysql_version.h
 usr/include/mariadb/mysqld_error.h
+usr/include/mariadb/server/*
 usr/lib/*/libmariadb.a
 usr/lib/*/libmariadb.so
 usr/lib/*/libmariadbclient.a

debian/rules

@@ -146,9 +146,6 @@ override_dh_auto_install:
 	# If mariadb-test package is removed, also remove most of it's files
 	grep --quiet "Package: mariadb-test" debian/control || rm -rf $(TMP)/usr/share/mariadb/mariadb-test
 
-	# Delete private files from libraries so they don't get shipped in the -dev packages
-	rm -r $(TMP)/usr/include/mariadb/server/private
-
 	# Don't ship sql-bench at all, just delete it completely even though it builds
 	rm -r $(TMP)/usr/sql-bench