kent: changes by commit

review to branch (2010-01-26 to 2010-02-02) v224

• Adding another test case
  • src/utils/bedGraphToBigWig/emptyItem.bedGraph 1.1 - lines changed: 0, context: html, text, full: html, text
• Adding another error test case.
  • src/utils/bedGraphToBigWig/endThenStart.bedGraph 1.1 - lines changed: 0, context: html, text, full: html, text
• Adding more error checking on input.
  • src/lib/bbiWrite.c 1.11 - lines changed: 10, context: html, text, full: html, text
• Fixing it so that while you have to be sorted within a chromosome, the chromosomes themselves need not be sorted.
  • src/lib/bbiWrite.c 1.12 - lines changed: 13, context: html, text, full: html, text