Commits for galt

v271_preview to v271_preview2 (2012-07-24 to 2012-07-31) v271

• adding more snp999 tables to list.
  • src/hg/lib/chromGraphFactory.c - lines changed 7, context: html, text, full: html, text
• getDNA2 is close to a plain text dump and needs special handling
  • src/hg/hgc/hgc.c - lines changed 10, context: html, text, full: html, text
• keeping res* variables from overflowing integers when averageSpan is large. fixes #8630
  • src/utils/bedToBigBed/bedToBigBed.c - lines changed 8, context: html, text, full: html, text