rsyslog work log 34

Yesterday’s rsyslog work log:
– changed rsCStrObj name to cstr_t, which is more inline with the
rest of rsyslog (now) and also much easier to type
– fixed some doc errors – thanks to Michael Biebl for pointing
them out
– some cleanup for 3.11.4 release
– first steps in implementing object interfaces (stage work for
later dynamic class loading)
– changed calling interface for some more objects
– some more interface changes
– changed tokenizer to utilize var class instead of scalar types
– modified parser and tokenizer to support slight ABNF modifications
from yesterday
– change in ABNF was wrong – made a slightly different change
– fixed bugs in tokenizer
– expression compiler finished (except bugs, of course ;))
– added empty vmstk class
– defined some entry points in vmstk