v102-final

• Jakob has added code for rendering RNA secondary structures. This includes kent/src/hg/hgTracks/rnaFoldTrack.c and kent/src/hg/hgc/rnaFoldClick.c.
• Jim continues to work on BioImage and hgGenePix (nearly 6000 lines of code this week).
• Angie has implemented drop-down menus in hgTables for enum and set fields.
• Angie also reloaded the dm2 multiz8way to correct the omission of droYak1 pairwise.
• Angie also extended doBlastzChainNet so that it supports 2bit for both target and query. doBlastzChainNet now also has -bigClusterHub and -smallClusterHub options.
• Hiram is working on mm6. He has added additional error checking to agpToFa.
• Daryl is working on ENCODE as documented in makeEncodeOrtho3.doc.
• Daryl also changed the LD track to have a limit on the region length for dense mode.
• Hiram added track encodeSangerGencode.
• Mark added tests for overlapSelect.
• Mark is working on pslDiff and cvsTools.
• Donna changed numerous URLs to be relative.