v174-preview - 8 Jan. 2008 (Pairings)

Code changes:

Fixed bug in hgTracks/variation.c causing label-drawing problems in hapMap track (reported on mailing list). (Angie)
Added correct handling of compressed uploaded files in hgSession, added .zip to the list of types decompressed in lib/linefile.c. (Angie)
Changed hConnectTcga() to hConnectLocal in hdb.c/h. (Fan)
Ongoing work on instinct. (Jing)
Fixed printing of incorrect EST strand in certain cases in hgc and clarified description of read direction. (Mark)