added mplotqueries option --xpos start. This will plot the start times of ops with duration, rather than when they ended (and were logged).
updated CHANGES to reflect changes so far for 1.1.1.
added durline plot (--type durline).
small cosmetic fix.
renamed parameter --xpos start  to  --optime-start
mention durline plot in changes. add work-around for windows to not use SIGPIPE.
bumped version to 1.1.2dev