Trying to bump 5.2.0 into Gentoo packages, but it doesn't even compile with the same options used for the 5.1 series.

./configure --prefix=/usr --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc --localstatedir=/var/lib --libexecdir=/usr/sbin --sysconfdir=/etc/mysql --localstatedir=/var/lib/mysql --sharedstatedir=/usr/share/mysql --libdir=/usr/lib64/mysql --includedir=/usr/include/mysql --with-low-memory --with-client-ldflags=-lstdc++ --enable-thread-safe-client --with-comment=Gentoo Linux mariadb-5.2.0_beta --without-docs --without-big-tables --enable-local-infile --with-extra-charsets=all --with-mysqld-user=mysql --with-server --with-unix-socket-path=/var/run/mysqld/mysqld.sock --without-libwrap --enable-shared --enable-static --without-debug --with-charset=utf8 --with-collation=utf8_general_ci --with-embedded-privilege-control --with-embedded-server --with-ssl=/usr --enable-assembler --with-geometry --with-readline --with-zlib-dir=/usr/ --without-pstack --enable-community-features --disable-profiling --without-plugin-pbxt --without-libevent --with-maria-tmp-tables --with-plugins=csv,myisam,myisammrg,heap,archive,blackhole,federated,partition,maria,innobase

...
sql_acl.cc: In function 'my_bool acl_init(bool)':
sql_acl.cc:404: error: 'old_password_plugin' was not declared in this scope
sql_acl.cc: In function 'void acl_free(bool)':
sql_acl.cc:818: error: 'old_password_plugin' was not declared in this scope
make[3]: *** [sql_acl.o] Error 1
make[3]: *** Waiting for unfinished jobs....
mv -f .deps/discover.Tpo .deps/discover.Po
mv -f .deps/log_event_old.Tpo .deps/log_event_old.Po
mv -f .deps/procedure.Tpo .deps/procedure.Po
make[3]: Leaving directory `/dev/shm/portage/dev-db/mariadb-5.2.0_beta/work/mysql/libmysqld'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/dev/shm/portage/dev-db/mariadb-5.2.0_beta/work/mysql/libmysqld'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/dev/shm/portage/dev-db/mariadb-5.2.0_beta/work/mysql/libmysqld'
make: *** [all-recursive] Error 1

• ERROR: dev-db/mariadb-5.2.0_beta failed: