A bug with non-continuous numeration of blocks in dump

[GoogleCodeExporter]

If blocks in a dump are numbered non-continuously (e.g. 1,2,3,7,8,10), the
parser generates incorrect numbers in XML (it numbers them continuously,
i.e 1,2,3,4,5,6).

Original issue reported on code.google.com by zolotukhinm on 23 Apr 2010 at 9:30