frontend/grammar: Added support for <obj_type> . <obj_expression>.
frontend/grammar: Added support for <obj_type> . <obj_expression>.

… where <obj_expression> may be an arbitrary expression accessing an object's
fields or attributes.

sysdb/sysdb,tokkee/sysdb,tokkee/sysdb,tokkee/sysdb,sysdb/sysdb,sysdb/sysdb