rsyslog work log 40

Yesterday's rsyslog work log: 2008-02-13 - added some code to expr.c - not yet to be used - cleaned up imfile.c - changed interface of logmsg() to make it more straightforward - introduced a new, more powerful, message submission interface submitMsg() in additon to logmsg() - a first, rough implementation of imfile that is able to read files (but does not persist or handle rotation or whatever) - removed some left-over unnecessary dbgprintf's - added ability to monitor file accross rotation - fixed a race condition in DoDie() - cosmetic issue in debugging mode, could not happen in production - added the ability to persist current read location for the file monitor - some cleanup - created initial doc for imfile plugin - released a preview of 3.11.2 (with the file monitor)