to not redraw overlay lines correctly in certain cases involving non-default
zoom levels.

by Isaac Peterson.  The bug caused the program to deadlock if signal() or
broadcast() was called at exactly the same time a wait_or_timeout() funciton timed
out.

array2d type image (not the one that draws onto a GUI canvas object).  The bug
triggered whenever a perfectly horizontal or vertical line that extended
outside the image was drawn.  This has been fixed.

safety.

parallel_for_blocked()

rules as I recently added to the structural_svm_problem_threaded object.

when using the optimization tools.

were assigned to each other.

optimizer noticeably faster in some cases.

overhead.

things really needed by makedocs.  Things needed by makerel are now in their
own check.  Also switched to unix2dos instead of unsing flip since unix2dos is
more common.

--HG--
rename : docs/testenv => docs/testenv_rel

job.  This should give better overall CPU utilization than the previous smaller
job sizes.

LAPACK.

than returning them unmodified.