Commits for markd

v280_base to v281_preview (2013-03-05 to 2013-03-12) v281

• convert pslmap to from binKeeper to genomeRangeTree to reduce memory use by two orders of magintude
  • src/hg/utils/pslMap/pslMap.c - lines changed 16, context: html, text, full: html, text