Commits for markd

v317_preview to v317_preview2 (2015-05-18 to 2015-05-25) v317

• Added missing description for gencode supertrack (#15374)
  
  • src/hg/makeDb/trackDb/human/hg38/wgEncodeGencodeSuper.html - lines changed 174, context: html, text, full: html, text
• merged head
  
• fixed race condition on hgsql purging temporary files that caused errors when mulitple hgsql commands were run at the same thing. This is why /tmp was invented (no redmine)
  
  • src/hg/lib/sqlProg.c - lines changed 5, context: html, text, full: html, text
  • src/lib/osunix.c - lines changed 1, context: html, text, full: html, text
• merged head