v199-final - 27 Jan 2009 (Pairings)

Code changes:

Fixed bug with next-item button on composite tracks. (Andy)
Ignore the min and max following "wig " when comparing trackDb types. (Angie)
Ongoing work on positive selection tracks for HIV browser. (Fan)
Fixed cart variable .vis name for Gene Sorter custom marker column. (Galt)
Fixed upper and lower limits for data range when processing wigEncode, and error out on an empty file processed. (Hiram)
Ongoing work on BigWig. (Jim)
Ongoing work on cancer browser. (Jing, Steve, Zack)
Fixed bug with -overlapThresholdCeil criteria. (Mark)
Implemented substituting arbitrary setting from trackDb, support substitutions at load time (temporarly disabled). (Mark)
Set HGDB_CONF if not already set, but don't override it. (Mike)
Fixed bug in lib/hui.c that craxshed on bad index when trackDB.ra entry was inconsistent. (Tim)
Fixed problem with conservation plus/minus buttons. (Tim)
Ongoing work on multi-view tracks. (Tim)