unique" code. It was using DBEraseLabelsByContent() which would
erase all matching labels, and could potentially erase labels that
were still remaining on the list being processed, causing a segfault.
Also corrected minor errors identified by valgrind during debugging
the above-referenced problem.
to copy and search on a label that already exists in the flattened,
copied database. Otherwise multiple labels on a single net can cause
the search to go into an infinite loop, repeatedly copying and erasing
the same label over and over again.
label specified as having type "space" automatically overrides
the "no-reconnect-labels" flag. Modified the behavior of the
label reconnect algorithm so that it searches by plane order so
that material on the highest plane that matches the reconnection
criteria is chosen over similar materials on lower planes.
Tim Edwards