MDEV-26487 cpack rpm failed to build packages with cmake < 3.7.0

buggy regexp in old CPackRPM.cmake:

    string(REGEX REPLACE "%[A-Za-z0-9\(\),-]* " "" F_PATH ${F})
    string(REGEX MATCH "%[A-Za-z0-9\(\),-]*" F_PREFIX ${F})

it treats everything after the first space as a path

plugin/auth_pam/CMakeLists.txt

@@ -39,8 +39,8 @@ IF(HAVE_PAM_APPL_H AND HAVE_GETGROUPLIST)
     MYSQL_ADD_EXECUTABLE(auth_pam_tool auth_pam_tool.c DESTINATION ${INSTALL_PLUGINDIR}/auth_pam_tool_dir COMPONENT Server)
     TARGET_LINK_LIBRARIES(auth_pam_tool pam)
     SET(CPACK_RPM_server_USER_FILELIST ${CPACK_RPM_server_USER_FILELIST}
-        "%attr(700, -, -) ${INSTALL_PLUGINDIRABS}/auth_pam_tool_dir"
-        "%attr(4755, -, -) ${INSTALL_PLUGINDIRABS}/auth_pam_tool_dir/auth_pam_tool")
+        "%attr(700,-,-) ${INSTALL_PLUGINDIRABS}/auth_pam_tool_dir"
+        "%attr(4755,-,-) ${INSTALL_PLUGINDIRABS}/auth_pam_tool_dir/auth_pam_tool")
     SET(CPACK_RPM_server_USER_FILELIST ${CPACK_RPM_server_USER_FILELIST} PARENT_SCOPE)
   ENDIF()
   IF(TARGET auth_pam OR TARGET auth_pam_v1)