mtr and mysql-test-run symlinks are not installed anymore

lrwxrwxrwx 1 elenst elenst     19 Aug 15 00:55 /data/bld/10.2/mysql-test/mtr -> ./mysql-test-run.pl

lrwxrwxrwx 1 elenst elenst     19 Aug 15 00:55 /data/bld/10.2/mysql-test/mysql-test-run -> ./mysql-test-run.pl

commit c872b10022180602fbd5b2b0310b6d1e343dff5a

Author: Sergei Golubchik

Date:   Wed Aug 9 18:23:04 2017 +0200

    don't install same files twice

    CMakeLists.txt - merge mistake, apparently

    include/CMakeLists.txt - install from CMAKE_CURRENT_BINARY_DIR.

      Only install from CMAKE_CURRENT_SOURCE_DIR, if it's different

      from CMAKE_CURRENT_BINARY_DIR

    mysql-test/CMakeLists.txt - INSTALL_MYSQL_TEST() macro installs

      everything, no need to install mtr separately once again

    mysql-test/lib/My/SafeProcess/CMakeLists.txt

      MYSQL_ADD_EXECUTABLE includes INSTALL

    sql-bench/CMakeLists.txt

      list files explicitly. don't install garbage, don't process 'foo'

      and 'foo.sh' separately, it's only one file to install, not two.